Answer:
Explanation:
Color is caused by the way light bounces off of objects. Certain objects only reflect certain frequencies of light, which is what makes up color. For example, when the sun shines on earth (which, the sun shines white light, which is made of all colors), lets say it reflects off of an apple tree in a field. The tree's leaves will reflect green light because of the chloraphyll inside its cells. However, if the light reflects off of one of the apples on the tree, red light is seen because of the nutrients inside of the skin of the apple. In art, color is very important, so people have found ways to use paint (which is in all colors) to essentially mimic the effect that light has on the real world.
hope this helps!!! :3
List the following transition metal coordination compounds by their d electron count, with the highest at the top and the lowest at the bottom. [Fe(OH2).]3+ [MnO4] - [NiCl4]2- [Co(H2O).]3+ III
The most and least d electron count transition metal coordination complexes are [NiCl4]2- and [Co(H2O)]3+, respectively. [MnO4]-, [Fe(OH2)] 3+.
Who or what is an electron?A negative charges subatomic particle known as an electron can either be free or attached to an atoms (not bound). One of three types of components within an atom is an electrons that is bonded to it; both other two are particles and neutrons.
What exactly are atoms and electrons?The negative charges components of an atom are called electrons. The total negative charge of an atom's electrons counteracts the charge of its proton in the nucleus of an atom.
To know more about electrons visit:
https://brainly.com/question/18367541
#SPJ4
The question I need help with is in the photo
Answer: 144.2
Explanation:
Note that [tex]23.0^{\circ}\text{C}=298.0\text{ K}[/tex].
Using the formula [tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex] yields:
[tex]\frac{2.45}{T_1}=\frac{1.75}{298}\\\\T_1=\frac{298 \times 2.45}{1.75} \text{ K}\\\\T_1=\frac{298 \times 2.45}{1.75}-273^{\circ}\text{C}\\\\T_1=144.2^{\circ}\text{C}[/tex]
You are in charge of making Kool-Aid for a fundraiser. You need to mix the
powder into the water as fast as you can. How could you use your knowledge of
reaction rates to increase the speed at which you can mix the Kool-Aid? (Please
write 2-5 sentences.)
Calculate the radiation dosage in rads for a 65 ‑kg person that is exposed for 4.0 s to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed and that each beta particle has an energy of 1.0×10−13 J.
The radiation dosage in rads for a 65 ‑kg person that is exposed for 4.0 s to a 3.0 Ci source of beta radiation is 8.54 x 10⁻⁴ J/kg.
What is radiation?Radiation is defined as the energy that can be depicted as waves or particles and travels from one location to another. The DNA in our cells can be harmed by radiation.
The radiation dosage is determined by the ratio of the total dose to the exposed person's mass.
3 Ci beta radiation = 3 x (3.7x10¹⁰) = 11.1 x 10¹⁰decay/s.
Total beta energy taken in over 5 seconds
Et = ( 11.1 x 10¹⁰ ) x 5 x 1.0 x 10⁻¹³
Et = 55.5 x 10⁻³
The person's radiation dose is estimated as follows;
Rd = ET / m
Rd = 55.5 x 10⁻³ / 65 kg
Rd = 8.54 x 10⁻⁴ J/kg.
Thus, the radiation dosage in rads for a 65 ‑kg person that is exposed for 4.0 s to a 3.0 Ci source of beta radiation is 8.54 x 10⁻⁴ J/kg.
To learn more about radiation, refer to the link below:
https://brainly.com/question/13934832
#SPJ1
Element widths in responsive designs are often specified in percentages with the size of each element relative to ___ .
Element widths in responsive designs are often specified in percentages with the size of each element relative to the width of its parent.
Responsive design refers to an approach of web page creation that involves use of flexible layouts, flexible images, and cascading style sheet media queries. The objective of responsive design is to develop web pages that detect the visitor's screen size and orientation and change the layout accordingly. In other words, responsive web design refers to a method that simply reflows, adjust, reposition, resize overall content and images according to width of browser or screen size. Responsive websites are designed to provide accessibility across all devices regardless of size of device screen. Element widths in responsive designs are often represents a percentage value which is often used to define a size as relative to an element's parent object.
Learn more about Responsive design:
https://brainly.com/question/16805626
#SPJ4
With reference to the following:
Eric Jaffe’s seminal paper on culture of human umbilical vein endothelial cells (Jaffe et al., 1973) recommends using supplemented M199 culture medium. The basic medium contains common electrolytes at the following millimolar concentrations:
Na+ (164), K+ (5.8), Ca++ (1.26), Mg++ (0.81), Cl- (145), HPO42- (0.78), HCO3- (26.1), SO42- (1.26). It also contains glucose (5.6 mM), amino acids and phenol red (a pH indicator).
The recommended supplements (to be added immediately before use) are foetal calf serum (20% v/v) to provide growth factors, penicillin (200 units ml-1) and streptomycin (200 µgml-1) to prevent bacterial contamination, and L-glutamine (2 mM), a labile amino acid that does not survive storage.
The RMM of L-glutamine is 146 gmol-1. How much L-glutamine will you need to weigh out to add to 500 ml of your complete medium?
Group of answer choices
291 mg
73 mg
146 mg
2.91 g
146 g
Answer: HCO3- and HPO4 2-
Explanation:the electrolytes work as a buffer which lies in 7 the less than 7 would be acidic and more than 7 would be basic. So they work as a buffer to maintain pH of 7
Which of the following is a heterogeneous mixture?
Opotting soil
Tap Water
Ochlorine gas (CI)
Otable salt NaCl
From the available choices, Heterogeneous combinations make up potting soil.
In heterogeneous blends, we can easily discern between the various components. The soil's components make up a heterogeneous mixture since they don't all have the same physical and chemical properties.
It's a great idea to grow indoor and potted plants in potting soil. It is typically more nutritious and well-balanced for the plants. The phrase "soil heterogeneity" refers to the diversity of soil traits or taxonomic groupings found in a certain area. Potting soil is a heterogeneous mixture since its composition is not homogeneous.
Tap water is uniform and impossible to identify salt particles without the proper equipment since salt virtually completely dissolves into it.
Chlorine gas (Cl) is a component of homogeneous compounds. Potassium and chlorine are a mixture because all of the components are heterogeneous, or separate.
Table salt is a homogeneous mixture. It contains several ingredients, hence it is not a compound.
The only heterogeneous substance would be potting soil since, without the use of specialist equipment, we can see a variety of particles with different sizes, forms, colors, and other properties.
to know more diversity about visit this:
https://brainly.com/question/7063191
#SPJ1
What is the boiling point, in °C,
of a 0.321 molal aqueous
solution of NaCl?
BP(water) = 100 °C
Kb (water) = 0.512 °C/m
[?] °C
Answer:
the boiling point of solution at 3 decimal point is 100.329०C Ans.
Explanation:
given data -
molality of Nacl = 0.321 m
molal boiling point elevation constant (Kb) =0.512०C/m
# formula of change of boiling point of sample =
∆ Tb =i × Kb × m
Kb = molal boiling point of elevation constant
m = molality
i = vont's hoff factor.
Nacl is strong electrolyte and its 100% dissociate so the value of i for Nacl is 2
put value in the formula
∆ Tb = 2 × 0.512 ०C/m × 0.321m
= 0.3287
= 0.329०C
∆Tb = T'b - Tb
T'b = boiling point of solution
Tb= boiling point of solvent( water)
0.329०C = T'b - 100०c ( boiling point of water = 100०C)
T'b = 0.329०C + 100०C
= 100.329०C
Which of the following standard enthalpy of formation values are not zero at 25 oC? Select all that apply. a. Ne(g)b. Hg(l)c. Na(s)d. H(g)e. Ag(s)f. S8(s)(rhombic)
H, S8(monoclinic), as well as Methane are the appropriate responses (g). For these three chemicals, overall enthalpy of production is not zero.
Entropy vs. enthalpy: what are they?Entropy is the quantity of inherent disorder within a substance, whereas enthalpy is the quantity of internal energy. Enthalpy is greater than 0 for water since it is equal for elemental compounds like hydrogen gas and gaseous oxygen (regardless of phase).
What distinguishes enthalpy from energy?Enthalpy with internal energy vary primarily in that internal energy is the total of a system's both potential and kinetic energy, whilst enthalpy is indeed the heat absorbed is evolved through chemical processes that take place in a system.
To know more about enthalpy visit:
https://brainly.com/question/13996238
#SPJ4
What is the concentration of iron (III) nitrate in a solution prepared by dissolving 44.1 g of Fe(NO3)3
in 478 mL of water
A- 0.000381 M Fe(NO3)3
B- 92.3 M Fe(NO3)3
C- 2.62 M Fe(NO3)3
D- 0.381 M Fe(NO3)3
E- 0.182 M Fe(NO3)3
Answer:
0.381 mol/L
Explanation:
"Concentration" is another word for Molarity (at least in this context). Molarity (M) is defined as:
M = mol/L
To find the concentration/molarity, you'll need to find the number of moles of iron (III) nitrate divided by the liters of the solution.
1. Convert grams to moles
You first need to calculate the molar mass of iron (III) nitrate, so you can convert the grams to moles. To do this, you add the masses of each atom in the compound (the masses of each atom can be found from the periodic table).
Fe (iron) has a mass of 55.845 g
N (nitrogen) has a mass of 14.007 g
O (oxygen) has a mass of 16 g
(1 x 55.845) + 3(14.007 + (16 x 3)) = 241.88 g/mol
193.9 is iron (III) nitrate's molar mass, so now you can divide the grams you have by its molar mass to get the number of moles.
44.1/241.88 = 0.1823 mol
2. Convert mL to L
There are 1000 milliliters in 1 liter, so you can divide the number of mL by 1000 to get the number of liters.
478/1000 = 0.478 L
3. Calculate Molarity/concentration
M = mol/L
M = 0.1823/0.478
M = 0.381
Predict the ground-state electron configuration of each ion. Use the abbreviated noble gas notation.
Cu²+
Co³ +
I got answers of:
Cu - [Ar]4s^2 3d^7 ; [Ar]3d^7 ; [Ar]3d^10 ; [Ar]4s^1 3d^10
Co - [Ar]4s^2 3d^4 ; [Ar]3d^4
And these were all wrong, please help
The electron configuration of Cu²+ ion - [tex]1s^2 2s^2 2p^6 3s^2 3p^6 3d^9[/tex]
The electron configuration of Co³ + ion - [tex]1s^2 2s^2 2p^6 3s^2 3p^6 3d^6[/tex]
What is the electron configuration?When we are talking about the electron configuration, we are talking about the way that the electron is arranged around the nucleus of the atom. We know that electrons in the atom can be arranged in energy levels in the atom of the element.
We are asked to write here the electron configuration of the copper II ion and that of the cobalt III ion. In either case, we have to know that electrons have been removed from the neutral atom. In the first case, there are two electrons that have been removed while in the second case, there are three electrons that have been removed.
Thus in writing the electron configuration of the specie we have to take into account the number of the electrons that have been lost due to ion formation. Recall that the ground state is the lowest energy state of the chemical specie.
Learn more about electron configuration:https://brainly.com/question/14283892
#SPJ1
Drawing were everything goes will be much appreciated it thank you
Following is the classification of given substances:
Atomic element: Ag
Molecular element: F₂
Molecular compound: CO
Ionic compound: PbI₄
What is a molecule?Molecules, groups of two or more atoms that form the smallest identifiable unit that can divide a pure substance and that retain the composition and chemical properties of that substance.
An atom consists of a single positively charged nucleus surrounded by a cloud of negatively charged electrons. As the atoms approach, the electron clouds interact with each other and with the nucleus. This interaction causes atoms to combine to form molecules when the energy of the entire system is reduced. From a structural point of view, a molecule consists of a collection of atoms joined by valences. A diatomic molecule contains two atoms chemically bonded together. When two atoms are identical, like oxygen (O2) molecules, they form a homonuclear diatomic molecule, but when the atoms are different, like carbon monoxide (CO) molecules, they are heteronuclear. Forms a diatomic molecule. Molecules containing two or more atoms are called polyatomic molecules. B. Carbon dioxide (CO2) and water (H2O). A polymer molecule can contain thousands of constituent atoms.
To know more about molecules, visit:
https://brainly.com/question/28069497
#SPJ1
During an investigation a scientist heated 2.76 g of silver carbonate till it decomposed to leave a silver residue. The total mass of the silver residue formed was 2.16 g. Does the law of conservation of mass hold true in this case?
The given statement "Does the law of conservation of mass hold true in this case?" is true because the the sum of the masses of A and B is equal to the mass of AB that reacts.
What is the law of conservation of mass?The law of conservation of mass states that mass can neither be created nor destroyed during the course of reactions but can however be converted to other forms during the course of reactions. Following this rule, if AB reacts to produce A and B, the sum of the masses of A and B must be equal to the mass of AB that reacts.
While the silver residue produced is a solid that is easily recoverable, the other two products are gases that could escape into the surrounding atmosphere unless specially collected or if the reaction is conducted in an enclosed space.
Thus, the fact that only 2.16 g of silver residue was formed does not mean that the law of conservation was not supported by the reaction. The remaining mass would be that of the gases that could have escaped during the course of the reaction.
More on the law of conservation of mass can be found here: https://brainly.com/question/13383562
#SPJ1
AWARDING A LOT OF POINTS TO WHOEVER ANSWERS THESE (correctly)
1. How many moles is 55 g of NaCi?
2. How many moles is 0.025 g of NaCO3?
3.How many grams is 0.500 moles of NaCi?
1) The number of moles of the sodium chloride is 0.94 moles.
2) The number of moles of sodium carbonate is 2.4 * 10^-4 moles.
3) The mass of the sodium chloride is 29.25 g.
What is the number of moles?We know that we can be able to determine the amount of substance and that the unit of the amount of substance is the mole. The mole refers to the elementary entities that we can be able to find in the compound.
We can obtain the number of moles in each of the cases using the formula;
Number of moles = mass/ molar mass
Hence;
For sodium chloride;
55 g/58.5 g/mol
= 0.94 moles
For sodium carbonate;
0.025 g/106 g/mol
= 2.4 * 10^-4 moles
For the mass of the sodium chloride;
Mass = 0.500 moles * 58.5 g/mol
= 29.25 g
Learn more about number of moles:https://brainly.com/question/14919968
#SPJ1
HELP PLEASE NEED THIS RIGHT NOW!!!!
(03.02 HC)
Use the portion of the periodic table shown below to answer the questions.
A portion of the first three columns of the periodic table is shown. Column one from top to bottom reads 11 sodium 22.990, 19 potassium 39.098, and 37 rubidium 85.468. Column two reads 12 magnesium 24.305, 20 calcium 40.078, and 38 strontium 87.62. Column three reads 21 scandium 44.956 and 39 yttrium 88.906.
Part 1: Name two elements that have the same properties as magnesium (Mg). (4 points)
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of potassium (K). Explain how you determined your answer using complete sentences. (6 points) (10 points)
Two elements that have the same properties as magnesium are calcium and strontium.
The number of protons in potassium, K = 19
the number of electrons in potassium, K = 19
The number of neutrons in potassium, K = 20
What is the Periodic Table?The Periodic Table is a table that arranges the elements in order of increasing atomic number into vertical columns called groups and horizontal rows called periods.
Elements in the same period have the same number of electron shells or energy levels.
Elements in the same group have the same number of valence electrons or outermost shell electrons.
Considering the given data:
The elements in group 1 are sodium, potassium, and rubidium.
The elements in group 2 are magnesium, calcium, and strontium.
The elements in group 3 are scandium and yttrium.
The number of protons, electrons, and neutrons present in an atom of potassium (K) is determined by the atomic number and mass number of potassium.
Atomic number = number of protons
Number of proton = number of electrons in a neutral atom
Number of neutrons = mass number - atomic number
The atomic number of potassium = 19
mass number = 39
number of neutrons = 39 - 19
number of neutrons = 20
Learn more about periods and groups at: https://brainly.com/question/19266854
#SPJ1
https:which of the following options correctly describe the hydrolysis of an ester under acidic conditions? select all that apply.
The correct answer to the given question about hydrolysis of an ester under acidic conditions is option a, c and d.
The given reaction of hydrolysis of an ester under acidic conditions is reversible equilibrium, traces acid, and produces a carboxylic acid and an alcohol
As in the substitution reaction of a carboxylic acid and an alcohol, an ester is a molecule produced from an oxoacid (organic or inorganic) in which at least one hydroxyl. Since glycerides are one of the main groups of lipids and make up the majority of animal fats and vegetable oils, they are significant in biology.
Most esters have a pleasant aroma; those with a low molecular weight are frequently utilized as fragrances and can be found in pheromones and essential oils. They are one of the most prevalent kinds of synthetic lubricants on the market and serve as high-grade solvents for a variety of plastics, plasticizers, resins, and lacquers.
Question
which of the following options correctly describe the hydrolysis of an ester under acidic conditions? select all that apply.
a- this reaction is catalyzed by a trace amount of acid
b- this reaction produces a carboxylate salt and an alcohol.
c- this reaction produces a carboxylic acid and an alcohol
d- the reaction is a reversible equilibrium
To learn more about Ester click here
brainly.com/question/9459983
#SPJ4
Some 2-methyl-2-butene may beproduced in the reaction as a by-product. Give the mechanism forits production.
2-methyl-2-
butanol to form2-methyl-2-butene.
2-methyl-2-
butanol to form 2-methyl-2-butene.
Two substituents are taken out of the reactant molecule in an elimination reaction to create the product.
In a one- or two-step method, two substituents are eliminated from a molecule in an organic reaction known as an elimination reaction. Atoms are eliminated as molecules and compounds during an elimination reaction. Two substituents are taken out of the reactant molecule in an elimination reaction to create the product. A metal, an acid, or a base typically catalyze elimination. E1 and E2 reactions are the two primary categories of elimination processes in organic chemistry. Both E1 and E2 processes are also known as alcohol elimination reactions and alkyl halide elimination reactions, respectively. Any organic chemical reaction known as an elimination reaction in which two atoms and groups of atoms are eliminated.
Learn more about molecule
https://brainly.com/question/21263612
#SPJ4
A sample of 200g of an isotope decays to another isotope according to the function
(a) How much of the initial sample will be left in the sample after 25 years?
(b) How long will it take the initial sample to decay to half of its original amount?
(a) After 25 years, about g of the sample will be left.
(Round to the nearest hundredth as needed.)
a. Around 0.50g would be left in the sample after 25 years.
How long will it take the initial sample to decay to half of its original amount?
The initial sample will take 5 years to decay to half of its original amountWhat is isotope?
Isotopes are atoms with the same number of protons but differing numbers of neutrons. They differ in mass, which affects their physical characteristics even if they have almost identical chemical properties.Give an example of isotope?
Isotopes are atoms that are part of the same element and have the same atomic number Z but a different mass number A. For instance, three isotopes of the element carbon, having respective masses of 12, 13, and 14, are carbon-12, carbon-13, and carbon-14.To know more about isotopes checkout this link:
https://brainly.com/question/364529
#SPJ4
which of the following is a correct electron configuration for a neutral atom of carbon in the excited state g
A carbon atom's excited-state electrical configuration is 1s2,2s1,2p3, meaning that by absorbing energy, one electron from the 2 s orbital is excited to the 2 p orbital.
What is the carbon atom's neutral electron configuration?According to Hund's rule, the orbital diagram in c is assumed to match the electron configuration of carbon, which is 1s2 2s2 2p2. It is discovered experimentally that a neutral carbon atom's ground state does indeed contain two unpaired electrons.
Describe MOT through an example?picture relating to mot chemistry
One electron each is present in the 1-s orbitals of the two hydrogen atoms. Two different ways in which two hydrogen atoms can unite to create a bond are possible. The MO is in the other
Learn more about hybridization on:
https://brainly.com/question/14140731
#SPJ4
A balloon that contains 4.80 g of carbon dioxide gas has a volume of 12.0 L. Assume
that the pressure and temperature of the balloon remain constant. What is the new
volume of the balloon if an additional 0.50 mol of CO₂ is added? [ans: 67 L]
Answer:
the new volume of the balloon after 0.50 mol of CO2 is added is 67 L.
Explanation:
To solve this problem, we need to use the ideal gas law, which states that the pressure of a gas is directly proportional to its temperature and number of moles, and inversely proportional to its volume. This relationship can be written as:
PV = nRT
Where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature of the gas.
In this problem, the pressure, temperature, and number of moles of the gas all remain constant, so we can rearrange the ideal gas law to solve for the volume of the gas:
V = nRT/P
Plugging in the given values, we find that the volume of the gas is:
V = (0.50 mol CO2)(0.08206 Latm/molK)(298 K)/(1 atm)
V = 67 L
naturally occuring minerals in rocks have a visible crystalline structure
Naturally occurring minerals in rocks have a visible crystalline structure because they have a definite chemical composition which allows for the atoms arranged within the mineral to be in a specific ordered manner.
What is a Crystalline solid?This is referred to as a solid material whose atoms are arranged in a highly ordered microscopic structure thereby forming a crystal lattice present on all the sides.
Naturally occurring minerals in rocks have a crystalline structure because they have a definite chemical composition which permits the atoms to be arranged in a specific ordered manner or fashion thereby making it the correct choice.
Read more about Crystalline here https://brainly.com/question/27940692
#SPJ1
The full question is:
Explain why naturally occurring minerals in rocks have a visible crystalline structure.
. How many grams of CaCl₂ (molar mass = 111
g/mol) are needed to prepare 100. mL of 0.100
M solution? Show your calculation to receive
full credit.
A) 55.5 g
B) 111 g
C) 222 g
D) 555 g
Answer:
1.11 grams CaCl₂
**I am aware that this is not one of the answer choices, but I pretty confident that this should be the correct answer according the the given values
Explanation:
To find the mass of CaCl₂ necessary, you need to
(1) convert the volume from mL to L (1,000 mL = 1 L)
(2) calculate the amount of moles (M = moles / L)
(3) convert moles to grams (using the molar mass)
It is important to arrange the conversions/ratios in a way that allows for the cancellation of units. The final answer should have 3 sig figs like the given values.
(Step 1)
100. mL CaCl₂ 1 L
-------------------------- x ------------------- = 0.100 L CaCl₂
1,000 mL
(Step 2)
Molarity (M) = moles / volume (L) <----- Molarity ratio
0.100 M = moles / 0.100 L <----- Insert values
0.0100 = moles <----- Multiply both sides by 0.100 L
(Step 3)
Molar Mass (CaCl₂): 111 g/mol
0.0100 moles CaCl₂ 111 grams
--------------------------------- x --------------------- = 1.11 grams CaCl₂
1 mole
What is the wavelength of a radio wave with a frequency of 150hz
Answer:
2.00 x 10⁶ m
Explanation:
To find the wavelength, you need to use the following equation:
c = λf
In this equation,
-----> c = speed of light (3.00 x 10⁸ m/s)
-----> λ = wavelength (m)
-----> f = frequency (Hz)
To find the wavelength, you can plug the given value and the constant into the equation and solve for "λ".
c = λf <----- Equation
3.00 x 10⁸ m/s = λ(150 Hz) <----- Insert values
2.00 x 10⁶ = λ <----- Divide both sides by 150 Hz
According to the balanced equation below, how many moles of ClO−2(aq) are needed to react completely with 20. mL of 0.20 M KMnO4 solution?
In order for 20 mL of 0.20 M KMnO4 solution to completely react, 3 m.mol of chlorite anion are needed. by a redox process.
How to fix?Reduction
MnO−4+4H++3e−→MnO2(s)+2H2O(l) I (i)
Oxidation ClO2 + 2 H2 O + ClO4 + 4 H + 4 e (ii)
Overall
4×(i)+3×(ii)4MnO−4+3ClO−2+4H+→4MnO2(s)+3ClO−4+2H2O(l)
Moles of KMnO4 equal 20 10 3L, 0.20 mol, and 1 = 4.0 10 3mol.
According to the equation, we require 3/4 equiv (or 4.0 10 3 mol) of chlorite anion.
How can molarity be used to identify moles?Molarity (M), which is determined by dividing the solute's mass in moles by the volume of the solution in liters, is the most widely used unit to express solution concentration: liters of solution/moles of solute equals M. One liter of a solution with a 1 molar concentration (1.00 M) contains 1.00 moles of solute.
How does molality translate into moles?Moles of solute divided by kilograms of solvent equals molality. Adding moles of a solvent = 3 and mass of solvent = 0.5 kg , we obtain molality = 3 / 0.5 = 6 mol/kg .
Learn more about oxidation here:
https://brainly.com/question/25798412
#SPJ4
Multiple choice (please help)
Given chemical equation:
CuSO₄ + 2HI → Cu₂SO₄ + I₂ + H₂SO₄
CuSO₄ + 2HI - reactants (option - b) is correct.
A chemical equation consists of what components?A chemical equation is composed of the "yields" arrow, the "reactants," and the "products" components. Compounds or elements that are required for the reaction and go through chemical change while the reaction is occurring are known as reactants. Yield is typically represented by an arrow in reactions and refers to the ability to "produce" or "form."
Numerous observable factors, such as color change, energy change (such as a rise in temperature or the production of light), gas production, precipitate formation, and changes in physical properties, can be used to detect chemical reactions.
To know more about chemical equation visit:
https://brainly.com/question/28294176
#SPJ1
select the glassware that must be used when preparing a dilute solution of known concentration from a stock solution of higher concentration: A) graduated cylinder beaker B) volumetric flask C) graduated cylinder, volumetric flask D) graduated pipet, Erlenmeyer flask E) graduated cylinder, beaker F) graduated pipet, volumetric flask
The glassware that must be used when preparing a dilute solution of known concentration from a stock solution of higher concentration is (F) graduated pipet and volumetric flask.
A graduated pipette is a pipette that has the volume marked along the tube in increments. It is employed to precisely quantify and transfer a liquid volume between containers. It has a tapering tip and is composed of glass or plastic tubes. Graduation markings along the tube's body show the capacity from the tip to certain points.
Volumetric flasks, also known as graduated flasks or measuring flasks, are pieces of laboratory glassware or plasticware that are calibrated and labeled to contain a particular volume of reagents, solvents, or any other liquids. Other names for volumetric flasks are measuring flasks and graded flasks. Chemical solutions are frequently made using volumetric flasks.
You can also learn about volumetric flasks from the following question:
https://brainly.com/question/19517011
#SPJ4
g the main cause of the increase in the amount of co2 in earth's atmosphere over the past 170 years is . increased infrared radiation absorption by the atmosphere increased worldwide fertilizer production increased worldwide primary production the burning of fossil fuels and deforestatio
the main cause of the increase in the amount of co2 in earth's atmosphere over the past 170 years is . increased infrared radiation absorption by the atmosphere increased worldwide fertilizer production increased
the burning of larger amounts of wood and fossil fuels
An extracted and burned fossil fuel[a] is a hydrocarbon-containing substance that naturally originated in the Earth's crust from the remains of extinct plants and animals. Coal, oil, and natural gas are the three primary fossil fuels. Fossil fuels can be used to produce energy, power engines (like internal combustion engines in cars), or supply heat for immediate use (such for cooking or heating). Before burning, some fossil fuels are processed to produce derivatives like kerosene, gasoline, and propane. The anaerobic decomposition of buried deceased animals that contained organic molecules produced by photosynthesis is the source of fossil fuels. [4] The geological process that transforms these elements into high-carbon fossil fuels often takes millions of years.
Learn more about fossil fuel here:
https://brainly.com/question/3371055
#SPJ4
Calculate the hydroxide ion concentration, [OH−] , for a solution with a pH of 7.08 .
Answer: [tex][\text{OH}^{-}}]=10^{-6.92} \text{ M}[/tex]
Explanation:
[tex]\text{pH}+\text{pOH}=14\\\\7.08+\text{pOH}=14\\\\\text{pOH}=6.92\\\\\\\text{pOH}=-\log([\text{OH}^{-}}])\\\\6.92=-\log([\text{OH}^{-}}])\\\\[/tex]
[tex][\text{OH}^{-}}]=10^{-6.92} \text{ M}[/tex]
Which part of the brain could be damaged if the patient has difficulty in creating and organizing sentences?
Damage to frontal lobe neurons or tissue can result in personality changes, difficulty concentrating or planning, and impulsivity. The frontal lobe of the brain could be damaged if the patient has difficulty in creating and organizing sentences.
What is frontal lobe ?The frontal lobes are found directly behind the brow. The frontal lobes are the largest lobes in the human brain and the most commonly injured region in traumatic brain injury.
The frontal lobe is in charge of higher cognitive functions such as memory, emotions, impulse control, problem-solving, social interaction, and motor function as a whole.
The frontal lobe of the brain is in charge of high-level cognitive abilities as well as primary motor functions. It is the hub of our personality and communication skills.
Thus, The frontal lobe of the brain could be damaged if the patient has difficulty in creating and organizing sentences.
To learn more about frontal lobe, follow the link;
https://brainly.com/question/14567052
#SPJ1
Study Guide Unit 5
ICP
1) Distinguish between reactants and products.
a. The Law of Conservation of states that cannot be created nor destroyed.
b. are the substances that start a chemical reaction and are located on the side of the arrow in a chemical equation, while are the substances produced from the reaction and are located on the side of the arrow.
c. If the number of atoms in the reactants do not equal the number of atoms in the products we say the reaction is , if they do equal each other, we say the reaction is
d. A chemical equation is defined as.....
2. Understand how to classify types of reactions.
a. In your own words, explain how to recognize the following types of reactions. Use complete sentences and explain using vocabulary words.
i. Synthesis -
ii. Decomposition -
iii. Single Replacement -
iv. Double Replacement -
v. Combustion -
1) reactants are the starting material of a chemical reaction and are written on the left hand side of the equation
while
products are the end result of the reaction and are written on the right hand side of the equation
a) The law of conservation of energy states that energy can not be created nor be destroyed
b) reactants are the substances that start a chemical reaction and are located on the left hand side of the arrow in a chemical equation, while products are the substances produced from the reaction and are located on the right hand side of the arrow.
c)if the number of atoms in the reactants do not equal the number of atoms in the products we say the reaction is unbalanced if they do equal each other, we say the reaction is balanced
d) chemical equation can be defined as the symbolic representation of chemical reactions in which the reactants and products are expressed in terms of their respective chemical formulae
2) combination reaction
decomposition reaction
single replacement reaction
double replacement reaction
combustion reaction
2 i synthesis is the production of chemical compounds by reaction from simpler materials
ii. Decomposition means to break up into constituent part by or as if by a chemical process
iii. single replacement is a reaction in which one element is substituted for another element in a compound
iv. Double replacement have two ionic compounds that are exchanging anions or cations
v. combustion means a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in form of flame.