In chemistry, a mole is:

the number of particles in an atom

the units used when counting mass

The concept of the mole allows chemists to:

go between number of particles and mass

Which has more particles, a mole of sodium chloride, or a mole of water?

not enough information to be able to answer

Intro To Quantitative Chemistry

Approved & Edited by ProProfs Editorial Team

The editorial team at ProProfs Quizzes consists of a select group of subject experts, trivia writers, and quiz masters who have authored over 10,000 quizzes taken by more than 100 million users. This team includes our in-house seasoned quiz moderators and subject matter experts. Our editorial experts, spread across the world, are rigorously trained using our comprehensive guidelines to ensure that you receive the highest quality quizzes.

Learn about Our Editorial Process

| By Hrycenko

Hrycenko

Community Contributor

Quizzes Created: 1 | Total Attempts: 225

Questions: 10 | Attempts: 225 | Updated: Apr 19, 2024

Questions

Settings

Create your own Quiz

Share on Facebook Share on Twitter Share on Whatsapp Share on Pinterest Share on Email Copy to Clipboard Embed on your website

Select the best possible answer from the following questions:

Questions and Answers

1.

In chemistry, a mole is:
- A.
  
  The number of particles in an atom
- B.
  
  A quantity, not unlike a dozen
- C.
  
  The units used when counting mass
- D.
  
  The mass of a carbon-12 atom
- E.
  
  All of the above
Correct Answer
B. A quantity, not unlike a dozen

Explanation
The correct answer is "a quantity, not unlike a dozen." In chemistry, a mole is a unit used to represent a specific amount of a substance, just like a dozen represents a specific number of items. It is a way to count the quantity of particles, such as atoms or molecules, in a sample. The other options mentioned, such as the number of particles in an atom, the units used when counting mass, or the mass of a carbon-12 atom, are not accurate definitions of a mole.

Rate this question:
2.

The concept of the mole allows chemists to:
- A.
  
  Balance chemical equations
- B.
  
  Find the mass of a proton
- C.
  
  Go between number of particles and mass
- D.
  
  Torture chemistry students
- E.
  
  Explain average atomic mass
Correct Answer
C. Go between number of particles and mass

Explanation
The concept of the mole allows chemists to go between the number of particles and mass. The mole is a unit that represents a specific number of particles, similar to how a dozen represents 12 items. By using the mole, chemists can convert between the number of particles (atoms, molecules, ions) and the mass of a substance. This is essential in various calculations and experiments in chemistry, such as determining the amount of reactants needed in a chemical reaction or finding the mass of a sample based on its chemical formula.

Rate this question:
3.

What is the difference between molar mass and atomic mass?
- A.
  
  Molar mass is bigger
- B.
  
  Molar mass is smaller
- C.
  
  There is no difference
- D.
  
  The units are different
- E.
  
  A and D
Correct Answer
E. A and D

Explanation
Molar mass is the mass of a mole of a substance - measured in g/mol. Atomic mass is the mass of one atom of a substance - measured in atomic mass units.

Rate this question:
4.

In quantitative chemistry, the symbol M stands for:
- A.
  
  Mass
- B.
  
  Molar mass
- C.
  
  Avagadro's number
- D.
  
  Amount (in moles)
- E.
  
  Number of entities
Correct Answer
B. Molar mass

Explanation
The symbol M in quantitative chemistry stands for molar mass. Molar mass is the mass of one mole of a substance and is expressed in grams per mole. It is calculated by summing up the atomic masses of all the atoms in a molecule. Molar mass is an important concept in stoichiometry and is used to convert between mass and moles in chemical calculations.

Rate this question:
5.

In quantitative chemistry, the symbol m stands for:
- A.
  
  Mass
- B.
  
  Molar mass
- C.
  
  Avagadro's number
- D.
  
  Amount in moles
- E.
  
  Number of entities
Correct Answer
A. Mass

Explanation
The symbol "m" in quantitative chemistry stands for mass. This refers to the amount of matter present in a substance, typically measured in grams. Mass is an important concept in chemistry as it is used to calculate various quantities such as molar mass, amount in moles, and number of entities. By knowing the mass of a substance, one can determine its chemical properties and make calculations related to stoichiometry and reactions.

Rate this question:
6.

In quantitative chemistry, the symbol n stands for:
- A.
  
  Mass
- B.
  
  Molar mass
- C.
  
  Avagadro's number
- D.
  
  Amount in moles
- E.
  
  Number of entities
Correct Answer
D. Amount in moles

Explanation
The symbol "n" in quantitative chemistry represents the amount in moles. Moles are a unit used to measure the quantity of a substance, similar to how we use "dozen" to represent 12 items. The amount in moles allows us to easily compare and calculate chemical reactions and quantities of substances. It is a fundamental concept in chemistry that helps in understanding and predicting the behavior of substances in various reactions and calculations.

Rate this question:

1
0
7.

Which has more particles, a mole of sodium chloride, or a mole of water?
- A.
  
  A mole of sodium chloride
- B.
  
  A mole of water
- C.
  
  Both have same amount
- D.
  
  Not enough information to be able to answer
Correct Answer
C. Both have same amount

Explanation
A mole is defined as the amount of substance that contains the same number of particles as there are atoms in exactly 12 grams of carbon-12. Since both sodium chloride (NaCl) and water (H2O) have the same number of particles in a mole, which is 6.022 x 10^23 particles, the correct answer is that both have the same amount of particles.

Rate this question:
8.

Calculate the molar mass of calcium hydroxide to three significant figures.

Correct Answer
74.1, 74.1 g, 74.1 grams
9.

If the molar mass of a substance is 67.2 g/mol, what is the mass of8.0 mol of the substance (in grams, to the appropriate number of sigfigs)?

Correct Answer
540g
540
540 g

Explanation
8.0 mol only has 2 significant figures

Rate this question:

4
10.

Convert a mass of 2.5 g of table salt (sodium chloride) to an amountin moles.

Correct Answer
0.043
0.043 mol
0.043mol

Explanation
The given question asks to convert a mass of 2.5 g of table salt (sodium chloride) to an amount in moles. The correct answer is 0.043 mol. To convert grams to moles, we need to divide the mass of the substance by its molar mass. The molar mass of sodium chloride is approximately 58.44 g/mol. Dividing 2.5 g by 58.44 g/mol gives us the answer of 0.043 mol.

Rate this question:

4

Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Apr 19, 2024

Quiz Edited by
ProProfs Editorial Team
Mar 28, 2010

Quiz Created by
Hrycenko

Intro To Quantitative Chemistry

In chemistry, a mole is:

The concept of the mole allows chemists to:

What is the difference between molar mass and atomic mass?

In quantitative chemistry, the symbol M stands for:

In quantitative chemistry, the symbol m stands for:

In quantitative chemistry, the symbol n stands for:

Which has more particles, a mole of sodium chloride, or a mole of water?

Calculate the molar mass of calcium hydroxide to three significant figures.

If the molar mass of a substance is 67.2 g/mol, what is the mass of8.0 mol of the substance (in grams, to the appropriate number of sigfigs)?

Convert a mass of 2.5 g of table salt (sodium chloride) to an amountin moles.