Question 1

What is Avogadro's number?

Accepted Answer

6.022 x 10²³

Answer

3.14

Answer

2.718

Answer

9.81

Question 2

What is the molar mass of water?

Accepted Answer

18.015 g/mol

Answer

12.011 g/mol

Answer

35.453 g/mol

Answer

22.989 g/mol

Question 3

What is the definition of a mole?

Accepted Answer

A unit of measurement for the amount of a substance

Answer

A type of chemical bond

Answer

A unit of pressure

Answer

A gas at room temperature

Question 4

What is the relationship between the mass of a substance and the number of moles present?

Accepted Answer

Directly proportional

Answer

Inversely proportional

Answer

Not related

Answer

Exponential

Question 5

What is the molar mass of carbon dioxide?

Accepted Answer

44.01 g/mol

Answer

12.01 g/mol

Answer

32.00 g/mol

Answer

28.01 g/mol

Question 6

What is the formula to calculate the number of moles in a given mass of a substance?

Accepted Answer

moles = mass / molar mass

Answer

moles = mass x molar mass

Answer

moles = mass + molar mass

Answer

moles = mass - molar mass

Question 7

What is the definition of a molar ratio?

Accepted Answer

The ratio of moles of one substance to moles of another substance in a chemical reaction

Answer

The ratio of masses of one substance to masses of another substance in a chemical reaction

Answer

The ratio of volumes of one substance to volumes of another substance in a chemical reaction

Answer

The ratio of densities of one substance to densities of another substance in a chemical reaction

Question 8

What is the definition of molarity?

Accepted Answer

The number of moles of solute per liter of solution

Answer

The number of grams of solute per liter of solution

Answer

The number of grams of solvent per liter of solution

Answer

The number of moles of solvent per liter of solution

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