Which element is likely to be the best conductor of electricity?

Answers

Answer 1

Answer:

silver

Explanation:

The most electrically conductive element is silver, followed by copper and gold. Silver also has the highest thermal conductivity of any element and the highest light reflectance.

Answer 2

Answer:

A. copper

Explanation:

edge 2021


Related Questions

Atoms don’t absorb all wavelengths of light because of…
a. Their valence electrons
b. Their shells
c. Their color
d. They do absorb all wavelengths of light

Answers

Answer:

b. Their shells

Explanation:

The electronic shell of atoms represents the energy levels in a particular atom.

To understand the way atoms absorb energy, we must know that the wavelength absorbed is commensurate with the energy of the atom. This available energy allows for specific amount of energy to be absorbed.

Therefore, the electronic shell in an atom determines the absorption wavelength of the atom.

25 points , hi! please look at the attachment for the question, I'm having a hard time because all I have to do is solve through those 2 problems but I'm not sure if I solve the fractions first then multiply that result by 100 or what. I asked my teacher which she helped a little but I don't think she understood where I was lost. If you can help I would really appreciate it. Thank you.
This was the set up question:
4. If 100.0g of nitrogen gas (N2) is reacted with 100.0g of hydrogen gas (H2) to form NH3. What is the limiting and excess reactants?
Hint: Convert grams to moles for each reactant and then convert to moles of NH3. You need your balanced equation from answer 1 to determine the mole relationship between each reactant and the product NH3. Use the periodic table to determine the molar mass of all chemical formulas. Fill in the “?” blanks below to show your work.

and in the screenshot it has everything I'm working with and the conclusions I need to draw from it, I can draw the conclusions just fine on my own but I need help solving.

Answers

Answer:

To answer the question, we correctly fill the attached screenshot as follows;

3H₂ + N₂ → 2NH₃The molar mass of H₂ = 2 g/mol

[tex]100.0 g \ H_2 \times \dfrac{1 \ mol \ H_2}{2 \ g \ H_2} \times \dfrac{2 \ mol \ NH_3}{3 \ mol \ H_2} = 33.\bar 3 \ mol \ NH_3[/tex]

The molar mass of N₂ = 28 g/mol

[tex]100.0 g \ N_2 \times \dfrac{1 \ mol \ N_2}{28 \ g \ N_2} \times \dfrac{2 \ mol \ NH_3}{1 \ mol \ N_2} \approx 7.143 \ mol \ NH_3[/tex]

A. Therefore, the excess reactant is hydrogen gas H₂ because it makes the most amount of ammonia, NH₃ (33.[tex]\bar 3[/tex] moles of NH₃)

B. The limiting reactant in nitrogen, N₂, because it is the reactant that makes the least amount of the ammonia, NH₃ (approximately 7.143 mol NH₃)

C. The theoretical yield of ammonia, is the maximum amount of ammonium that can be produced from the reaction between the 100 g of hydrogen gas, H₂, and 100 g of nitrogen gas, N₂ which is given by the amount of ammonia produced by the limiting reactant which is approximately 7.143 mole of NH₃

Explanation:

Answer:

Explanation:

Did u ever get answer

PLEASEEEE Hurry its due in 20 min
Complete and balance each of the following equations for acid-base reactions.
HClO4(aq)+NaOH(aq)→
Express your answer as a chemical equation. Identify all of the phases in your answer.

Answers

Answer:

HCl[tex]O_{4}[/tex](aq) + NaOH → NaCl[tex]O_{4}[/tex](aq) + [tex]H_{2} O[/tex](l)

Explanation:

water is a liquid if you can't see

2.
Which one of the following substances is a compound?
A. Hydrogen
B. Tron
C. Oxygen
D. Sodium fluoride
Explain your answer:

Answers

D. Sodium fluoride
explanation because

1. A mathematical equation that predicts how a physical phenomenon will behave

hypothesis

2. A predicted experimental outcome based on prior knowledge and experience.

quantitative data

3. The variable that is changed on purpose by the scientist.

independent variable

4. The variables that must be kept constant so as not to bias or influence the results

scientific law

5. Data that is descriptive rather than numerical

qualitative data

6. Data that is numerical

control variable

7. A well tested explanation for why a physical phenomenon occurs

scientific theory

Answers

Answer:

1. A mathematical equation that predicts how a physical phenomenon will behave - Scientific law

2. A predicted experimental outcome based on prior knowledge and experience - Hypothesis

3. The variable that is changed on purpose by the scientist - Independent variable

4. The variables that must be kept constant so as not to bias or influence the results - Control variable

5. Data that is descriptive rather than numerical -Qualitative data

6. Data that is numerical - Quantitative data

7. A well tested explanation for why a physical phenomenon occurs - Scientific theory

Explanation:

In the method of science in understanding and explaining phenomena in the universe, observations are made, explanations are put forward, experimented and tested, before conclusions are made. Explanations of some common terms in the scientific process is given below:

1. A scientific law is a mathematical equation that predicts how a physical phenomenon will behave.

2. A hypothesis is a predicted experimental outcome based on prior knowledge and experience.

3. A independent variable is the variable that is changed on purpose by the scientist.

4. A control variable is the variable that must be kept constant so as not to bias or influence the results.

5. Qualitative data is data that is descriptive rather than numerical.

6. Quantitative data is data that is numerical

7. A scientific theory is a well tested explanation for why a physical phenomenon occurs.

How can radiation, conduction, and convection affect a city? (like Atlanta)

Answers

Radiation from the sun heats up the city to the point where, when people touch the roof (conduction) of their car or their lemonade cup, they get burned. The car door’s paint has turned to liquid and the lemonade drink has evaporated (convection)

Calculate the molecular mass of the following mass of the following chemical compound
C6H12O6

24 G/mol
180 gmol
155 g/mol
19 g/mol

Answers

Answer:

132g/mol

Explanation:

Given compound:

   C₆H₁₂O₆

Molecular mass of the compound.

 This is the sum of the atomic masses of the given elements in the compound;

  C = 12

  H  = 12

  O = 6

Molecular mass = 6(12) + 12(1) + 6(16) = 180g/mol

SOMEONE HELP ME PLEASE ILL GIVE BRAINLY!

Is the following picture an example of a chemical change or a physical change?

A chemical change, because the atoms are rearranging to form new molecules.

A physical change, because the molecules are staying the same.

A chemical change, because the molecules are staying the same.

A physical change, because the atoms are rearranging to form new molecules.

Answers

Answer:

It would be a physical change, because the atoms are rerranging to form new molecules!

Explanation:


HUNK
FREE
IN PE
-05
HAE
-B. AFFEE
EMME
"Lanthanide serie
**Actinide series
Where are the non metals located

Answers

Answer:

What??? I don't understand.

Explanation:

Can someone pls do this ​

Answers

Explanation:

Sodium sulfate

   Na₂SO₄

 The sulfate ion is SO₄²⁻

Sodium sulfite

    Na₂SO₃

 The sulfite ion is SO₃⁻

Sodium sulfide

   Na₂S

 The sulfide ion is S²⁻

Sodium phosphate

 Na₂PO₄

 Phosphate ion is PO₄²⁻

Sodium phosphite

Na₃PO₃

  The phosphite is PO₃³⁻

Sodium phosphide

 Na₃P

  The phosphide ion is P³⁻

Jimmy has a sick friend who called and asked him to bring over some soup from the store. Jimmy rode his bicycle from his house to the store and then to his friend's house. What is the total distance Jimmy traveled?

Answers

Answer:

See the answer below

Explanation:

The total distance Jimmy traveled would be the sum of the distance covered from his house to the store and then from the store to his friend's house. The total distance covered can be determined if the average speed of Jimmy and the time he took to cover the distance are known.

    Average speed = total distance traveled/total time taken

Hence,

total distance traveled = average speed x total time.

A solution that has a high concentration of hydrogen ions has what type of pH?

7

14

13

2

Answers

Answer:

2

Explanation:

If the reacants of a chemical raction have 15 Carbon atoms, 72 Lead
atoms, and 88 Nitrogen atoms, what will the products have?

Answers

Answer:

In the human body, potential energy is stored in the bonds between atoms and molecules. Chemical energy is the form of potential energy in which energy is stored in chemical bonds. When those bonds are formed, chemical energy is invested, and when they break, chemical energy is released. Notice that chemical energy, like all energy, is neither created nor destroyed; rather, it is converted from one form to another. When you eat an energy bar before heading out the door for a hike, the honey, nuts, and other foods the bar contains are broken down and rearranged by your body into molecules that your muscle cells convert to kinetic energy.

Explanation:


*NEED HELP ASAP!*
Click on photo!
Please help meeee!!!

Answers

Answer:

What type of math are you taking.:)

Answer:

CaO

Explanation:

becoz

Ca O

2 2

you must crossing over the eqn

and get CaO

SOMEONE HELP ME PLEASE ILL GIVE BRAINLY

Snapping an instant cold pack is a

Change in temperature

Formation of gas/bubbles

Formation of precipitate

Release of energy (fire/light)

Change in color

Answers

Answer:

Answer

Change in temperature

It is an example of an endothermic reaction. It is absorbing heat.

where was hydrogen discovered

Answers

Answer:

maybe greece

Explanation:

by henry cavendish in 1766

Describe the two types of mechanical energy

Answers

Answer:

Kinetic energy and potential energy

Explanation:

kinetic energy is when the energy is active and potential energy is when it is about to be active

How do i caculate speed

Answers

Answer:

Speed uses the same units as velocity, which is meters divided by seconds (m/s)

(It doesn't need to be m/s, but it's the most common unit. It's basically any unit of length divided by any unit of time)

hope this helps and good luck

Answer/Explanation:

Speed is a force and is solved by using acceleration.

You can use the problem to solve for force:

F= MA or Force equals mass times acceleration.

why do large molecules seem to dissapear in the digestive system

Answers

Answer:

They must be dissolving.

Explanation:

Acid molecules must cling to remaining food molecules and slowly dissolve them.

CFCs were found to destroy what important compound in our atmosphere?
A: ozone
B: nitrogen
C: water vapor
D: helium

Answers

Answer:

A: ozone

Explanation:

Chlorofluorocarbons (CFCs) and hydrofluorocarbons (HCFCs) destroy ozone in the stratosphere.

Answer:

A: ozone

Explanation:

right on EDGE 2021

what are the properties of iconic compounds?

what are the properties of covalent compounds?

which type of compound is sugar?

someone plzz help!​

Answers

Answer:

in details

Explanation:

what are the properties of iconic compounds?

Ionic compounds exist in the form of ionic groupings in certain forms called (crystalline forms), and we find in these shapes an organized crystal arrangement of ions so that every ion with a specific charge is attracted to a group of ions with the opposite charge, meaning that one ion is bound by several ionic bonds. At the same time, this explains the presence of ionic compounds usually in the solid state (high density). This situation also explains the high melting and boiling points of these compounds.

One of the most important characteristics of ionic compounds is their inability to conduct electrical conductivity in the solid state due to the ions binding and their inability to move while they become conductive of electricity when they are melted or dissolved in water (ions are free to move in the melt and in the aqueous solution).

And among its most important characteristics:

1- It dissolves in water and does not dissolve with benzene, for example (salt) because water is a polar solvent that can separate ions from each other.

2- It has a high melting point due to the force of electrostatic attraction between the positive and negative ions.

3- Its state is solid under normal conditions, due to the force of the electrostatic attraction between the positive and negative ions.

4- Solid ionic compounds do not conduct electricity, but their solutions with water conduct electricity, because when the compound is solid, the ions are connected to each other, but when the compound is a solution, the ions are free to move and conduct the electromagnetic current.

what are the properties of covalent compounds?

In covalent compounds (unlike ionic compounds), we can talk about independent molecules, as covalent compounds are composed of independent molecules linked together by different bonds (van derval, hydrogen) of varying strength. So there are covalent compounds in all three cases according to the strength of these bonds. There are covalent compounds in a gaseous state (weak bonds between molecules), covalent compounds in a liquid state, and also there are covalent compounds in a solid state (strong bonds between molecules). The same is true for melting and boiling points, so covalent compounds Their boiling and melting points vary according to the quality and strength of the bonds between the molecules.  

As for the electrical conductivity, in the pure state, the covalent compounds are mostly non-conductive because they are not originally charged or because they are electrically neutral in the presence of charges, but the charged ones may have what is known as the electric torque and will come.

Likewise, in their smelters, the molten solid covalent compound (such as molten sugar) is not conductive of electricity. As for the solution, it may be non-conductive as in the case of a sugar solution or be conductive as is the case in a solution of hydrogen chloride (hydrochloric acid) and the reason for conducting or not in the solution is due to The covalent compound ionization (conversion into separate ions by the action of a solvent) or its de-ionization.

Sugar does not ionize when dissolved in water. Rather, its molecules only separate from each other, while hydrogen chloride does ionize to the hydrogen ion and the chlorine ion.

which type of compound is sugar?

The chemical or molecular formula for sucrose is C 12 H 22 O 11, which means that each sugar molecule contains 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms. A type of sugar called sucrose is also known as sucrose. It is a sucrase made in many different plants.

The properties of the compounds are the following:

a. The properties of the ionic compounds are they are hard, form crystals, have high melting and boiling point, good insulators.

b. The properties of the covalent compound are they are soft, do not form the crystal, have low melting and boiling point, bad insulators.

c. Sugar is a covalent compound.

What is a covalent compound?

Covalent compounds are attracted by covalent bonds. They make bonds by sharing one or more pairs of valence electrons.

What is an ionic compound?

These compounds are ions or charged particles. They make bonds when an atom or more atoms lose or gain electrons.

Thus, the properties are a. The properties of the ionic compounds are they are hard, form crystals, have high melting and boiling point, good insulators.

b. The properties of the covalent compound are they are soft, do not form the crystal, have low melting and boiling point, bad insulators.

c. Sugar is a covalent compound.

Learn more about covalent compounds

https://brainly.com/question/14752836

I'll give brainliest

Answers

Answer: Nitrogen

Explanation:

In DNA, adenine always pairs with?
Thymine
cytosine
Guanine

Answers

The answer would be Thymine.

Hope this helps! (:

Below is a phase diagram for Carbon Dioxide. Use this diagram to answer the following question.
In this example we will start the Carbon Dioxide out at a temperature of -20oC and 1 atm of pressure. If the pressure was raised to 100 atm of pressure while still staying at -20oC, what phases would the Carbon Dioxide change between?

Answers

If you mark those points on the phase diagram it appears to be moving from vapor to liquid. If you can’t see how I determined that please let me know and I can further explain.

Vapor to liquid is the same as saying gas to liquid, which I believe to be the correct answer.

What is the density of a
sample of a substance with a volume of
120 mL and a mass of 90 grams?

Answers

Answer:

The density of the unknown substance is 0.75 g/mL.

Explanation:

We are given the volume and mass of a substance and are asked to find the density.

Density is determined with the formula [tex]d=\frac{m}{v}[/tex], where d is the density, m is the mass of the substance, and v is the volume the substance occupies.

Therefore, the density can be found by dividing the mass and volume.

We are given and can determine that:

The volume is 120 mL (v).The mass of the substance is 90 grams (m).Our derived unit is going to be g/mL.

Now, let's set up the math required.

[tex]d = \frac{90 \ \text{grams}}{120 \ \text{mL}}\\\\d = \frac{3 \ \text{grams}}{4 \ \text{mL}}\\\\d = \frac{3}{4} \ \text{grams per mL}\\\\d = \frac{3}{4} \ \text{g/mL}\\\\ \bold{d = 0.75 \ \bold{g/mL}}[/tex]

Therefore, the density of the substance is 0.75 g/mL.

A sample of CO2 weighing 86.34g contains how many molecules?

Answers

Answer:

1.181 × 10²⁴ molecules CO₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic TableUsing Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

Step 1: Define

86.34 g CO₂

Step 2: Identify Conversion

Avogadro's Number

Molar Mass of C - 12.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of CO₂ - 12.01 + 2(16.00) = 44.01 g/mol

Step 3: Convert

[tex]86.34 \ g \ CO_2(\frac{1 \ mol \ CO_2}{44.01 \ g \ CO_2} )(\frac{6.022 \cdot 10^{23} \ molecules \ CO_2}{1 \ mol \ CO_2} )[/tex] = 1.18141 × 10²⁴ molecules CO₂

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

1.18141 × 10²⁴ molecules CO₂ ≈ 1.181 × 10²⁴ molecules CO₂

What’s the answer????

Answers

Answer:

D=Wavelength A=Amplitude C=Crest F=At rest point

Explanation:

Forgive me if I am wrong!

What types of atoms will experience radioactivity?

Answers

Answer:

Alpha particles, Beta particles, Gamma rays

Alpha Is the least harmful

Beta is second most harmful

Gamma is most dangerous

Explanation:

What two molecules are involved in cellular respiration?
Protein
oxygen
glucose
fiber

Answers

oxgen and glucose :)

The energy of a gamma ray photon whose frequency is 5.02 x 1020 Hz?

Answers

Answer:

The energy of photon is 33.28×10⁻¹⁴  J

Explanation:

Given data:

Frequency of photon = 5.02×10²⁰ Hz

Energy of photon = ?

Solution:

E = h.f

h = planc'ks constant = 6.63×10⁻³⁴ Js

by putting values,

E =  6.63×10⁻³⁴ Js × 5.02×10²⁰ Hz

        Hz = s⁻¹

E = 33.28×10⁻¹⁴  J

The energy of photon is 33.28×10⁻¹⁴  J.

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Ryan works for a delivery service. The function f(n) is used to calculatehis daily pay, in dollars, on a day when he makes deliveries.f(n)=6n+85Use the function to fill in the blanks the table shown. Make sure youhave an answer for Blank A, Blank B, and Blank C Help help please I really need it Wesley subscribes to a telecommunication companys movie package.The plan includes a basic monthly charge of $40 and an additional charge of $1.50 for every movie ordered. 2a) Write an equation for the total charge for a month, C, in terms of the number of movies, m, Wesley orders per month. This is a required question 2b) If Wesley ordered 4 movies one month, what was his total charge for the month? The 22nd Amendment limited the president for serving more than 2 terms in office. How did this decision made by the Constitution affect the U.S. Future? Which situation cannot be represented by the equation 15 + x = 25?Victor and Raul donated 25 cans of fruit to their local food bank. Victor donated 15 cans. What is, x, the number of cans Raul donated?The day's low temperature read 15F. The day's high temperature read 25F. What is x, the amount of degrees the temperature increased throughout the day?Jean has $25. She found $15 of the amount in her wallet and the rest in her coat pocket. What is x, the amount of money in her coat pocket?Elizabeth worked 15 hours. Josh worked 25 hours. What is x, the amount of hours they worked together? What does the shooting of the elephant symbolize for Orwell? In a company, the ratio of the number cashiers is 20:3. If there are 120 workers in the company,how many cashiers are there ? (A)17(B)18(C)21(D) 23 what are the 3 stages of cell respiration? 1. The measure of amount of salts dissolved in water is ____ What does it mean not to take information at face value?A. Thinking about where the information has come from, who is giving the information, and what their motives areB. Looking further into a subjectC. Reading very carefully between the linesD. Investigating the history of the person who is giving the information Which country was the first to provide social security How many moles are equal to 145 g of sodium carbonate? A patient provides a urine sample. The density of the patient's urine is 1.0192 g/mL. What is the specific gravity of the urine? Is Delaware a good state to make a mental map of When the economy is in a recession, the government will want to increase output. If the multiplier equals 2.9 and the government increases spending by 331, how much will output by 331, how much will output increase by? Miguel used the graph below to convert temperatures in degrees Fahrenheit (F) to Celsius (C). Can anybody help plzz?? 65 points Knowledge of the functioning of cells and DNA has led to the creation of new life in laboratories. What is an example of an ethical question this raises? a) Why are cells and DNA important to study? b) How do cells create new life? c) How many cells do humans have?Is it wrong to change or control life forms? What was reflected in both the Aztec and Spanish calendars? $20 s= X s= $21 Solve the compound inequality. Round each answer to the hundredths place.