How did the experiement with boiling water compare with the experiment in which magnesium was added to hydrochloric acid

Answers

Answer 1

In the experiment with boiling water and the experiment in which magnesium was added to hydrochloric acid both resulted in gas formation.

Hydrochloric acid and magnesium in a balanced chemical reaction

[tex]MgCl_{2}[/tex] + [tex]H_{2}[/tex] = Mg + 2HCl (g).

A gas is hydrogen . This reaction is exothermic (energy is released). New compounds are being produced due to chemical change.

Nothing new is created when water is heated to a boil. Heat is added in this endothermic reaction. Gas is steam. Both experiments a gas is released. One is a chemical change the other is a physical change. One is exothermic while other is endothermic.

Learn more about Exothermic

brainly.com/question/1324479

#SPJ4


Related Questions

A mixture of gases contains oxygen, nitrogen, and hydrogen at 0 degrees Celsius. The partial pressure of the oxygen gas is 20 kPa, the partial pressure of nitrogen gas is 40 kPa, and the partial pressure of hydrogen gas is 14 kPa. What is the total pressure exerted

Answers

The total pressure exerted by the gas mixture is 74 kPa.

What is hydrogen?

Hydrogen is an odorless, colorless, and tasteless gas that is the most abundant element in the universe. It is the lightest of all elements and is a component of many compounds, such as water and hydrocarbons. Hydrogen has the highest energy content of any common fuel, making it an attractive energy source. Additionally, it is utilised in the manufacture of fertiliser, polymers, and pharmaceuticals as well as a propellant.

This is calculated by adding up the partial pressures of each individual gas in the mixture, which in this case is 20 kPa for oxygen, 40 kPa for nitrogen, and 14 kPa for hydrogen. 20 + 40 + 14 = 74

To learn more about Hydrogen
https://brainly.com/question/24433860
#SPJ4

The extended structure of sodium chloride (NaCl) is shown.


Which of the following describes the configuration of Layer 4 of the sodium chloride crystal?

OPTIONS
A
It will be identical in all of its characteristics to Layer 1.

B

It will contain 4 atoms of chlorine and 5 atoms of sodium.

C

It will have chlorine atoms in all four of its corners.


D
It will have sodium that are bonded only to other sodium atoms.

Answers

Sodium chloride crystal will contain 4 atoms of chlorine and 5 atoms of sodium. Therefore, option B is correct.

What is sodium chloride?

In sodium chloride, each ion is usually surrounded by 6 ions of the opposite charge. The surrounding ions are positioned at the vertices of a regular octahedron.

In the language of close-packing, the larger chloride ions are arranged in a cubic array whereas the smaller sodium ions fill all the cubic gaps between them.

The basic structure is commonly known as the halite or rock-salt crystal structure. It can be represented as a face-centered cubic lattice with a two-atom basis or as two face centered cubic lattices. The one atom is located at lattice point, and the second atom is located halfway between lattice points along edge of the fcc unit cell.

Learn more about Sodium chloride, here:

https://brainly.com/question/6649122

#SPJ1

What process do orcas use oxygen for?

Answers

The process orcas uses the oxygen is from the blowholes. the blow holes are situated on the top of of the head and it uses oxygen from their.

The whales and the humans uses the lungs for the respiration or to get oxygen required for the breathing. the orcas uses the oxygen from the blow holes situated at the top of the head. The orcas lives under the water and when the orcas dive in the water they have ability to hold the breath for at the time . but this is not good for the health . it is be very stressful for the body.

Thus, the process do the orcas uses oxygen for the intake is the from the blow holes.

To learn more about orcas here

https://brainly.com/question/29784862

#SPJ4

Draw the structure of maleic acid ((Z)-but-2-enedioic acid).

Answers

The structure of maleic acid is H2C=CH2 with a double bond between two hydrogen atoms and a double bond between the second and third carbon atoms in the three carbon chain.

H3C-C=C-COOH

\ /

H2C=CH2

1. Draw a three carbon chain with a double bond between the second and third carbon atoms

H3C-C=C-COOH

2. Add two hydrogen atoms to the second carbon atom

H3C-C=CH2-COOH

3. Draw a double bond between the two hydrogen atoms

H2C=CH2-COOH

H2C=CH2

      \  /

H3C-C=C-COOH

The structure of maleic acid is H2C=CH2 with a double bond between two hydrogen atoms and a double bond between the second and third carbon atoms in the three carbon chain.

learn more about maleic acid here

https://brainly.com/question/14670113

#SPJ4

what point is swift makihng in a modest proposel by discounting other people and more humane solutions

Answers

Making people aware of how terrible hunger and poverty are in contemporary society is the aim of A Modest Proposal.

These kinds of problems are still important in today's culture and are not only confined to Swift's day. Jonathan Swift wrote an article titled "A Modest Proposal" that discusses hunger and poverty. Swift created it in 1729 as a means of drawing attention to how terrible these issues were.Most likely, this idea did seem excessive to many of his contemporaries, especially if they failed to grasp the text's satirical and sarcastic tone. Swift is trying to make a point about how things between the rich English and the poor Irish have gotten out of hand.

To learn more about Swift's please click on below link

https://brainly.com/question/15272045

#SPJ4

15) Lidocaine 2 gm/500 mL D5W is ordered to run at 3.5 mg/min. At what rate should the IV pump be set

Answers

Ordered to run at 3.5 mg/min is a dose of lidocaine 2 g/500 mL D5W. The IV pump should be set at a rate of 52.5 mL per hour.

Given 1mg/min = 60mg/hour

Then 3.5 mg/min = 3.5 x 60 mg/hour = 210mg/hour

Lidocaine is 2gm/500mL = 2000mg/500mL

If you only need to calculate the infusion rate, or the amount of medication to infuse per hour, you can do it by taking the entire volume in mL and dividing it by the total number of hours the medication is supposed to be infused over. This will give you the rate in mL per hour.

Then the flow of rate = 210mg/hour / 2000mg/500mL = 210x500/2000 = 52.5mL/hour.

To learn more about flow of rate click here https://brainly.com/question/24560420

#SPJ4

Liquid hexane CH3CH24CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 7.76 g of hexane is mixed with 34. g of oxygen. Calculate the minimum mass of hexane that could be left over by the chemical reaction. Round your answer to 2 significant digits.

Answers

the minimum mass of hexane that could be left over by the chemical reaction is 17.2 grams of.

Hexane, a non-polar solvent having a boiling point of 68 degrees Celsius, is the one used to extract the oil from rice bran to produce rice bran oil (RBO). The International System of Units uses the mole (symbol: mol) as the unit of material quantity. How many elementary entities of a particular substance are present in an object or sample is determined by the quantity of that material.

Hexane moles equal 29/86=0.34

41.3/32 = 1.30 moles of oxygen

One mole of hexane takes 9.5 moles of oxygen, as shown by the reaction.

In this case, oxygen is the limiting reagent.

Consumption of moles of hexane is 1.30/9=0.144

Hexane remaining in moles is equal to 0.20 to 0.34 moles.

Hexane mass remaining = 0.2*86=17.2 grams.

Learn more about Hexane

brainly.com/question/863881

#SPJ4

If 0.40 mole of H2 and 0.15 mole of O2 were to react as completely as possible to produce H2O, what mass of reactant would remain

Answers

The remaining mass of hydrogen that is present in the reaction is 0.20 grams.

The balanced chemical reaction can be depicted as follows:

2H2+O2---->2H2O

1 mole of Oxygen reacts with 2 moles of Hydrogen in order to produce two moles of water i.e., H2O.

0.15 moles of O2  reacts with 2 * 0.15 = 0.30 moles of H2

The moles of H2 are given i.e., 0.40 moles.

So remaining = 0.40 moles - 0.30 moles = 0.10 moles

Thus, the mass of H2 can be calculated by multiplying the number of moles with the molar mass that is expressed as follows:

Mass = moles * molar mass

Molar mass of H2= 2 g/mol

Mass of H2 remained in the reaction = 0.10 moles * 2 g/mole = 0.20 grams.

To learn more about number of moles check the link below:

https://brainly.com/question/28037816

#SPJ4

Which component is missing from the process of photosynthesis? carbon dioxide water _________ → glucose oxygen sunlight sugar plants carbon

Answers

The component missing from the process of photosynthesis is carbon dioxide. Carbon dioxide is an essential component of photosynthesis as it is used by plants to create glucose, which is the primary energy source for plants.

What is Carbon dioxide?

Carbon dioxide (CO2) is a colorless, odorless gas that is produced when carbon-containing compounds are burned. It is one of the most abundant trace gases that make up the Earth’s atmosphere. Carbon dioxide is important in the Earth’s natural cycle of life as plants use it to produce food through photosynthesis, while animals and humans exhale it as a waste product. In the atmosphere, carbon dioxide acts as a greenhouse gas and helps regulate the Earth’s temperature.

Carbon dioxide is taken in by the leaves of the plant and then combined with water and energy from sunlight to form glucose. Without carbon dioxide, photosynthesis would not be possible.

To learn more about Carbon dioxide
https://brainly.com/question/25385913
#SPJ4

Answer: The Correct Answer is A. Sunlight

Carbon Dioxide + Water + Sunlight → Glucose + Oxygen

Explanation: I took the test and got it right.

Have a Great Day.

What is the occurrence of elements properties in which it repeats every after the eight elements?

Answers

The occurrence of elements properties in which it repeats every after the eight elements named a periodicity.

Periodicity would be the reappearance of identical features in an element's behavior when it is organized in atomic number-increasing at frequent intervals.

The repeating of a comparable electronic configuration of an element's atoms in its outermost electron shell after such a predetermined regular interval that's what causes periodicity in its properties.

The elements were organized by chemist John A. R. Newland in order of increasing their atomic weight. He gave it the name "the principle of Octaves" and described how a particular collection of qualities recurs every eight places.

To know more about elements

https://brainly.com/question/14347616

#SPJ4

Which of the following is the strongest type of interaction that occurs between the atoms within the circled areas of the two molecules represented above? A) Polar covalent bond B) Nonpolar covalent bond C) Hydrogen bond D) London dispersion forces

Answers

The strongest type of interaction that occurs between the atoms is hydrogen bond.(option c)

A hydrogen atom that is bound to a highly electronegative atom and another highly electronegative atom that is close by interact with one another to form hydrogen bonds, which are an unique kind of attractive intermolecular interactions. This process is known as hydrogen bonding.

As a result of hydrogen bonding, a hydrogen atom simultaneously forms a covalent bond with one electronegative atom and a hydrogen bond with the other. These are the prerequisites for hydrogen bonding:

1.A strongly electronegative atom connected to the hydrogen atom must be present in the molecule. The degree of polarization of the molecule increases with increasing electronegativity.

2.The electronegative atom should have a tiny size. The strength of the electrostatic attraction increases with decreasing size.

So, the hydrogen bonding is the strongest bond.

Learn more about hydrogen bond

brainly.com/question/15099999

#SPJ4

56. A rigid cylinder with a movable piston contains a 2.0-liter sample of neon gas at STP. What is the
volume of this sample when its temperature is increased to 30.°C while its pressure is decreased to
90. kilopascals?
A) 2.5 L
B) 2.0L
C) 1.6L
D) 0.22 L

Answers

V2 = 2.499 2.5 L is the sample's volume when its temperature is raised to 30 °C and its pressure is lowered to 90 kilopascals.

What does the word "volume" actually mean?

The volume of an item is the space occupied inside its three-dimensional boundaries. A other word for it is the object's capacity.

What is the volume of the liquid?

The volume of liquid measured in a vessel's standard units is known as the liquid measurement. Infant milk bottle with milliliter measurement indications and juice bottle with a 1 liter capacity are two examples of vessels that have a "capacity" or "volume."

As,

Gas constant R is constant, so, Ideal gas equation can be written as,

                                        P₁ V₁ / T₁  =  P₂ V₂ / T₂

Solving for V₂,

                                          V₂  =  (P₁ × V₁ × T₂) ÷ (T₁ × P₂)

Putting Values,

                             V₂  =  (101.325 KPa × 2 L × 303 K) ÷ (273 K × 90 KPa)

                             V₂  =  61402.95 ÷ 24570

                             V₂  =  2.499 ≈ 2.5 L

To know more about volume visit:

https://brainly.com/question/28058531

#SPJ1

How long will it take Caroline to travel 45 miles if she is traveling 37mph (miles per hour)?

Answers

In the given question,It will take Caroline 1.2 hours  to travel 45 miles if she is traveling 37 mph (miles per hour).

As we know the velocity formula:

v = d/t

Where

V is velocity, d is distance and t is time.

as given in the question

distance = 45 miles

velocity = 37 mph

To find time t,

put the values in the formula:

t = d/v

t = 45/37

t = 1.2 hours

It will take Caroline 1.2 hours  to travel 45 miles if she is traveling 37 mph (miles per hour).

If you need to learn more about similar questions, click here

https://brainly.com/question/29243041?referrer=searchResults

#SPJ4

Which of the following answer choices would BEST describe Marco Polo's reaction when he saw the Chinese using coal

Answers

The majority of Europeans at the time had never heard of coal, which Marco Polo described as "black stones...which burn like logs."

Initially, charcoal was utilized in the production process, which caused extensive deforestation in northern China. However, coal had fully replaced charcoal by the end of the 11th century.

They do indeed have an abundance of firewood. However, due to the massive population and the large number of bathhouses and baths that are continually being heated, it would be impossible to supply enough firewood, as everyone takes a bath at least three times each week, and in the winter, if they can, every day. Since every man of rank and means has a bathroom of his own at home, the abundance and low cost of these stones result in significant wood savings.

To learn about coal click here

https://brainly.com/question/12981477

#SPJ4

What will be the pH of solution after sodium acetate solution in the middle or the last column reacts with the specified concentration of HCl

Answers

The pH of the final solution will be less than 7, but closer to 7 if the initial concentration of sodium acetate is high and the concentration of HCl is low.

The pH of a solution after a reaction with a strong acid like HCl will depend on the concentration of the acid and the concentration of the acetate ions (CH3COO-) in the sodium acetate solution. Sodium acetate (CH3COONa) is a weak base, and when it reacts with HCl, it forms acetic acid (CH3COOH) and sodium chloride (NaCl). The equation for this reaction is: CH3COONa + HCl → CH3COOH + NaClThe pH of a solution is a measure of the concentration of hydronium ions (H3O+) in the solution, so the pH of the solution after the reaction will depend on the concentration of H3O+ ions and the concentration of acetate ions. If the reaction is done in aqueous solution, the acetic acid formed will dissociate to form H3O+ and acetate ions. The acetate ions will neutralize some of the H3O+ ions, thus decreasing the overall acidity of the solution. The pH of the final solution will be less than 7, but closer to 7 if the initial concentration of sodium acetate is high and the concentration of HCl is low. It's important to note that without knowing the initial concentration of sodium acetate and the volume of the solutions it is not possible to determine the final pH.

Learn more about strong acid here:

https://brainly.com/question/12811944

#SPJ4

In terms of binding energy per nucleon, what element divides fission and fusion processes? O He
O U O Fe
O C
O H

Answers

Fe which is Iron is the element that distinguishes between fission and fusion processes in terms of binding energy per nucleon.

Since the negatively charged electrons are held in place by the electrostatic pull of the positively charged nucleus, the electron binding energy is the lowest energy needed to remove an electron from an atom. Fe element distinguishes between fission and fusion processes in terms of binding energy per nucleon. In particle physics, the term "binding energy" describes the energy an atom receives from electromagnetic interaction as well as the quantity of energy needed to break an atom down into free nucleons.

Learn more about Binding Energy

brainly.com/question/15718710

#SPJ4

Classification of Drugs - Trafficking Penalties
Case Scenarios:
Roody Zeeland was captured by Federal Marshals as he attempted to smuggle 39 kg of
cocaine into Dallas in a horse-drawn covered wagon. While attempting to escape, the
Suspect hit and killed an innocent bystander. It was his first offense.
11. If convicted, what penalty will the suspect be sentenced to?

Answers

Federal Marshals will receive trafficking penalty for attempting smuggling.

Trafficking is what kind of a crime?

Human trafficking, also referred to as trafficking in persons, is a crime that entails forcing or coercing a person to perform work or services or engage in sexual acts for monetary gain. The exertion of pressure may be covert or obvious, physical or psychological.

A conviction for keeping someone in servitude carries potential fines and a maximum 20-year prison sentence in a federal facility. The maximum penalty is life in prison if there is a death as a result of the violation or if it involved kidnapping, sexual assault, or other aggravating circumstances.

To know more about trafficking penalty visit:

https://brainly.com/question/14449916

#SPJ1

Place the following molecules in order of decreasing bond angle: NH3, CO2, CCl4, OF2
O CO2 > CCl4 > NH3 > OF2
O NH3 > CO2 > CCl4 > OF2
O CO2 > CCl4 > OF2 > NH3
O CCl4 > CO2 > OF2 > NH3
O OF2 > NH3 > CCl4 > CO2

Answers

The order of decreasing bond angle for the given molecules is :

O OF2 > NH3 > CCl4 > CO2

In molecules with a central atom, the bond angle is determined by the electron pair-bond pair repulsion. The bond angle decreases as the number of electron pair-bond pair increases. In OF2 the central atom is O, and it has 2 lone pairs and 2 single bonds, the bond angle is expected to be smaller than in the other molecules.In NH3, the central atom is N, and it has 3 single bonds and 1 lone pair, the bond angle is expected to be larger than in OF2 but smaller than in CO2 and CCl4. In CO2 and CCl4, the central atoms are C and Cl respectively, and they have 4 single bonds and no lone pairs, the bond angle is expected to be larger than in NH3, but smaller than in OF2.

Learn more about bond angle here:

https://brainly.com/question/1851495

#SPJ4

2CuO(s)+NO(g)→Cu2O(s)+NO2(g)
Express your answer using three significant figures.
ΔHrxn∘ =

Answers

ΔHrxn∘ = -144 kj / mol is the Standard Enthalpy of the reaction.  It is the sum of the individual enthalpies of the reactants subtracted from the sum of enthalpies of the products.  

2CuO(s)+NO(g) → Cu2O(s)+NO2(g)

[tex]Cu_{2}O[/tex] → 2[tex]Cu[/tex]  +  1/2 [tex]O_{2}[/tex]                                                        eqn 1

ΔH1 =  [tex]Cu_{2}O[/tex]  -  2 Cu - 1/2 [tex]O_{2}[/tex]

ΔH1 = -168.6 kj / mol  

2[tex]NO[/tex] + [tex]O_{2}[/tex] → [tex]2NO_{2}[/tex]                                                              eqn 2

ΔH2 = 2 [tex]NO[/tex]  +  [tex]O_{2}[/tex]   -  [tex]2NO_{2}[/tex]

ΔH2 = -114.1 kj / mol  

[tex]CuO[/tex] → [tex]Cu[/tex]  +  [tex]1/2 O_{2}[/tex]                                                            eqn 3

ΔH3 = Cuo - Cu -  [tex]1/2 O_{2}[/tex]

ΔH3=  157.3 kj / mol  

1/2 eqn 2    +          2  eqn 3    -  eqn 1

Δ H= -57.05 + 78.65 -168.6

ΔH= -144 kj / mol

To learn more about Enthalpy

https://brainly.com/question/13996238

#SPJ4

diatomic elements are important. what makes them different from other elemental substances?

Answers

Atoms follow the octet rule, which makes them more stable in pairs.

The diatomic elements oxygen and nitrogen have a slightly more complex structure. There is a double bond between the two O atoms in the O₂ dot structure. And there is a triple bond between the two N atoms in the N₂ dot structure. Diatomic elements are elements that are never found alone in nature. It is always bound to another atom. The diatomic state of this atom is much more stable than its unbonded state.

Everything around us contains energy, even if it doesn't move. All molecules and atoms have spins and vibrations, but these are all internal forces.

All atoms try to reach the lowest potential. Atom has a state of lower energy, implying maximum stability under certain external conditions.

Learn more about octet rule visit:

brainly.com/question/865531

#SPJ4

What is the mass in grams of 1.56 moles of aspartame?

Answers

459.1 g of aspartame has a 1.56 moles of aspartame.

Artificial sweetener aspartame is potent and low in calories. About 200 times sweeter than sugar, it is a white, odourless powder. It is legal to use in Europe as a tabletop sweetener, an energy-reducing food ingredient in beverages, desserts, and sweets, dairy products, chewing gum, and other foods.

Aspartame is a dipeptide that is created through the formal condensation of the amino group of methyl L-phenylalaninate with the alpha-carboxy group of L-aspartic acid.

Here, aspartame has 1.56 moles.

Molar mass of aspartame = 294.40 g/mol

So, Number of moles of aspartame = [tex]\frac{Given Mass}{Molar Mass}[/tex]

Mass of aspartame = Number of moles × Molar mass

or, mass = 1.56 × 294.3

or, mass = 459.1 g

Hence, Mass of aspartame of 1.56 moles of aspartame is 459.1 g.

To know more about aspartame from the link

brainly.com/question/10361394

#SPJ4

Classify each amino acid according to whether its side chain is predominantly protonated or deprotonated at a pH of 7. 40. The p K a values of the Asp, His, and Lys side chains are 3. 65 , 6. 00 , and 10. 53 , respectively

Answers

His and Lys are deprotonated but Asp will be protonated.

What is amino acids?

Organic substances that possess both amino and carboxylic acid functional groups are known as amino acids. Although hundreds of amino acids occur in nature, the alpha-amino acids that constitute proteins are by far the most significant. The genetic coding contains only 22 alpha amino acids. Amino acids are chemicals that make proteins when they combine. The building blocks of life are amino acids and proteins. Amino acids are left over after proteins are digested or broken down. To support the body, the human body utilizes amino acids to build proteins: Food should be broken down.

Here,

As the pH is given as 7.4 and pK of His is given as 6.00. There will occur a positive charge on His when it's pH < pK therefore, it is neutral at the given pH.

As the pK value of Lys is 10.53 that is greater than the pH of 7.40. Therefore, charge on Lys is positive.

As the pK value of Asp is 3.65 which is less than the pH value of 7.40. Hence, Asp has a negative charge.

Therefore, we can conclude that His and Lys are deprotonated but Asp will be protonated.

To know more about amino acid,

https://brainly.com/question/16832236

#SPJ4

Where does the linkage between the -COOH group on one end of one molecule and the -NH2 group at the end of another molecule occur

Answers

The peptides amino acids form peptide linkages between -COOH and -NH2 groups in protein.

What do you mean by peptides?

Peptides are short chains of amino acids that are linked together by peptide bonds. They are found in all living organisms and play important roles in many biological processes, such as cell signaling, hormone production, and metabolism. Peptides can range in size from two to hundreds of amino acids and can be made up of different combinations of amino acids.

Peptide bonds are formed when the carboxyl group (COOH) of one amino acid reacts with the amino group (NH2) of another amino acid. This creates a peptide bond, which is a covalent bond between the two amino acids. As proteins are made up of many amino acids, this process of forming peptide bonds is what links the amino acids together to form a protein.

To know more about Peptide,

https://brainly.com/question/21884818

#SPJ4

Help please brainliest, I promise

Answers

According to the stoichiometry of the given chemical equation,2.66 moles of aluminium oxide are formed when 4 moles of oxygen reacts.

What is stoichiometry?

It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.

As 3 moles  of oxygen gives 2 moles of aluminium oxide, thus, 4 moles of oxygen will give 4×2/3=2.66 moles.

Thus, 2.66 moles of aluminium oxide are formed when 4 moles of oxygen reacts.

Learn more about stoichiometry,here:

https://brainly.com/question/9743981

#SPJ1

What physical property is characteristic of all of the elements in the group 18 of the periodic table?

Answers

The quantity of electrons inside the valence (outermost) shells as well as the electron configurations among elements belonging to the identical group are identical. They display comparable chemical characteristics.

Noble gases were low chemically reactive, odourless, colourless, nonflammable, as well as monotonic gases. Noble gases are exceedingly stable as well as uncommon to form chemical connections since they have minimal inclination to receive or lose electrons, thanks to the complete valence electron shells of such atoms.

These gases don't receive, lose, or share electrons, making them inert as well as unreactive. They are often referred to as noble gases due to their rarity inside the atmosphere of the earth.

To know more about Noble gases

https://brainly.com/question/11764545

#SPJ4

At 298 K and 1 atm, bromine is a liquid with a high vapor pressure, whereas chlorine is a gas. This provides evidence that, under these conditions, the

Answers

At 298 K and 1 atm, bromine is a liquid with high vapor pressure, while chlorine is a gas. This proves that the intermolecular forces of bromine are greater than those of chlorine under these conditions.

At a temperature of 298 K and a pressure of 1 atm, bromine is in a liquid state due to the strong attraction between Br-Br molecules.

At the same temperature and pressure, chlorine exists in the gaseous state due to covalent bonds, while bromine has non-polar covalent bonds.

Learn more about covalent bond visit:

brainly.com/question/12661797

#SPJ4

In old western cowboys often would put their ear to a train track to listen for a oncoming train what benefit would this method provide over listening for a train by listening for sound throug air

Answers

Answer:the vibrations of the train moving on the tracks goes farther on the tracks than the sound of the train

Explanation:i think

The reaction of hydrogen (H2) and fluorine (F2) produces hydrofluoric acid (HF). How many grams of HF are produced if 3. 00 g of hydrogen react with excess fluorine with a 25 percent yield?

Answers

1.50g of hydrofluoric acid is produced if 3.00 g of hydrogen reacts with excess fluorine with a 25 percent yield.

The balanced equation for the reaction of hydrogen (H2) and fluorine (F2) to form hydrofluoric acid (HF) is:

H2 + F2 -> 2HF

To calculate the amount of HF produced, we'll use the concept of theoretical yield and percent yield.

The theoretical yield is the maximum amount of product that can be formed based on the amount of reactants used.

Here, we're given that 3.00 g of hydrogen is used, so to find the theoretical yield of HF, we'll use the molar ratio of hydrogen to hydrofluoric acid in the balanced equation.

1 mol of H2 produces 2 mol of HF

So, 3.00 g of H2 produces 2*3.00g = 6.00g of HF

Percent yield is the ratio of the actual yield to the theoretical yield multiplied by 100%.

It's given that the yield is 25%.

So the actual yield of hydrofluoric acid will be:

Actual yield = (Theoretical yield) x (percent yield/100)

Actual yield = 6.00g x (25/100)

Actual yield = 1.50g

So, 1.50g of hydrofluoric acid is produced if 3.00 g of hydrogen reacts with excess fluorine with a 25 percent yield.

Learn more about stoichiometry and chemical reactions here: https://brainly.com/question/14935523

#SPJ4

Prior to making your first extrication cut, you must first stabilize the vehicle. What tool will you use

Answers

Cribbing is the tool we use prior to making your first extrication cut in the vehicle

Before making the first extrication cut, it is important to stabilize the vehicle to prevent it from moving and to ensure the safety of the individuals involved in the extrication process. One tool that is commonly used to stabilize a vehicle during extrication is a set of stabilizing struts, also known as cribbing. Cribbing is a set of wooden or composite blocks that are placed under the vehicle to support it and prevent it from moving. The cribbing is typically placed at strategic points, such as the frame of the vehicle or the wheels, to provide a stable base for the vehicle.Additionally, other tools like wheel chocks, jacks, and air bags may be used to provide additional support and stability. The extrication team will assess the situation and choose the most appropriate tool to stabilize the vehicle.

Learn more about extrication  here:

https://brainly.com/question/29910467

#SPJ4

A 70g chunk of metal at 180C was dropped in a bucket containing 400g of water at 25C. The final temperature of the mixture was 28C. What is the specific heat capacity of the metal

Answers

Thus, the metal has a mhm specific heat capacity of 2.472 Joel program degrees Celsius.

To calculate the temperature change (T), subtract the end temperature from the initial temperature. Multiply the temperature change by the sample's mass. Share the product's energy and heat output. The equation is C = Q / (T m). The amount of heat energy per unit mass needed to raise the temperature by one degree Celsius is known as the specific heat. The form given below, where c is the specific heat, is typically used to express the relationship between heat and temperature change. Let S represent the water's specific heat capacity. Consequently, the combined temperature of 50g of water at 20°C and 50g of water.

Learn more about temperature here-

https://brainly.com/question/5421090

#SPJ4

Other Questions
y Evaluate the following expression when c = -3 and d= 2: 6/d -10c - c to the fourth power Maps made from readings were some of the first used to show the ocean floor's topography is as varied as the continental surface.a. radarb. pingc. satellited. sonar The table shows the balances of two bank accounts for 3 months. In what month will the balance of account A be equal to the balance of account B? A mixture contains only NaCl and Al2(SO4)3. A 1.68-g sample of the mixture is dissolved in water and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the precipitate is 0.116 g. What is the mass percent of Al2(SO4)3 in the sample In at least 150 words, evaluate the effectiveness of the Supreme Court In extending libertles outlined in the Constitutionto all U.S. citizens. Give an example. What is the three paragraph rule? Rome is centrally located along which major body of water?Mediterranean SeaAegean SeaAdriatic SeaBlack Sea What are the exact values of a and b?CORRECT ANSWERWITH EXPLANATION I NEED HELPPPPppppppp Which body of water is located west of Mexico?O the Pacific OceanO the Gulf of MexicoO the Atlantic OceanO the Caribbean Sea What is the coefficient of the variable in the expression 4 3x 7 6 3 points? As a nurse manager, you trial a new pain scale on your unit that is supported by numerous research studies. You compare the patient outcomes with the new scale against the existing scale. Feedback from staff suggests that the new scale is too difficult for patients who have limited language skills and who are already under duress to understand. The difficulty in implementing the new scale refers to testing: The diagram shows two proportional right triangles.What is the perimeter of the larger triangle? there are no good answers on brainly can someone pls answer this How did the Federalists manage to get the Massachusetts and New York legislatures to ratify, respectively (different reasons) How was the colonels life saved in the death disk? write a 5 paragraph essay on the book a tree grows in Brooklyn 01) When operating a simple machine an effort of 60N is used to lift the load of 240 N. Find the mechanical advantage.02) When operating the same machine the effort arm moves 4m while load moves 1m. Find velocity ratio03) In the same machine find work input.04) In the same machine find work output.05) Find the efficiency of this simple machine.Useless answers will be reported! This is about physcology. So I had a dream, I was in a city with my friends (Not my irl friends) and then someone threw a paper at a bully (Might off been me) and they started chasing us. I ran to a coroner where I thought I was safe. I saw my best friend (Not irl best friend) running down a stair case. Then someone grabbed my from behind a put a shot/needle in my neck. My vision started getting blurry and I passed out. I really thought I was passing out because it was so realistic. Anyway then I woke up(Still in a dream) and I saw a Lady in a red dress next to me in a bed. She had a very broad jaw and face structure but she was extremly creepy, she was also staring at me. I knew it wasn't real though so I closed my eyes and opened them and I said "I know you aren't real". After that i woke up. (All of this was in anime for some reason) (Also before the dream I fell asleep in a position facing the wall and when it got to the bad part with the lady I was in the same position but there was no wall) Please Interpret my dream