Spring Final Review

A number written in front of a chemical formula is a(n)

• Reactant

• Coefficient

• Product

• Precipitate

An NaOH solution with a concentration of 2.0 M and volume of 0.50 L is diluted to prepare a 0.50 M solution. What is the volume of the diluted solution?

• 0.5 L

• 1.0 L

• 2.0 L

• 4.0 L

Which of the following are the products for the following reaction?

methane + oxygen --> carbon dioxide + water

• methane & oxygen

• carbon dioxide & water

• oxygen & carbon dioxide

• methane & water

A solid produced during a chemical reaction in a solution is a(n)

• Product

• Reactant

• Coefficient

• Precipitate

Which of the following is NOT an indication that a chemical change has occurred?

• Color change

• Gas is produced

• Solid dissolves

• Odor change

• 1

• 2

• 3

• 4

The mass (in grams) of one mole of any pure substance is called the ______.

• Chemical mass

• Molar mass

• Compound mass

• Formula unit

What is Avogadro's Number?

• 6.02 x 10^-23

• 6.02

• 6.02 x 10²³

• 6.20 x 10²³

Magnesium nitrate's formula is Mg(NO₃)₂ so the ratio of magnesium to nitrogen to oxygen is:

• 2:2:6

• 1:1:6

• 1:2:6

• 1:2:5

The maximum amount that can be produced from a given amount of reactant is the ______.

• Actual yield

• Percent yield

• Mole ratio

• Theoretical yield