CPC Unit 8 (10.1 10.2 10.4) Review

The study of the quantitative relationships between the amounts of reactants used and the amounts of products formed by a chemical reaction is called stoichiometry.

• True

• False

Stoichiometry is based on the law of conservation of mass.

• True

• False

In any chemical reaction, the mass of the products is less than the mass of the reactants.

• True

• False

The coefficients in a chemical equation represent not only the number of individual particles but also the number of moles of particles.

• True

• False

The mass of each reactant and product is related to its coefficient in the balanced chemical equation and its molar mass.

• True

• False

Using the information provided, what mass of methanol reacts with 3 moles of oxygen?

• 64.10 g

• 2 g

• 32.04 g

Using the information provided, how many molecules of methanol react with 3 molecules of oxygen?

• 2

• 4

• 64.08

• 6.02 x 10²³

• 12.04 x 10²³

What are the reactants?

• methanol

• oxygen

• carbon dioxide

• water

molar mass of CO₂: 44.01 g/mol

molar mass of H₂O: 18.02 g/mol

What is the total mass of the reactants?

• 62.03 grams

• 5 moles

• 160.10 grams

• there is no way to tell with this info

molar mass of CO₂: 44.01 g/mol

molar mass of H₂O: 18.02 g/mol

What is the total mass of the products?

• 62.03 grams

• 5 moles

• 160.10 grams

• there is no way to tell with this info