SCIENCE/CHEMISTRY
6. The gram formula mass of C7H16 and the gram formula mass of CaCO3 contain

approximately the same number of _____.

a. anions

c.

carbon atoms

b. atoms

d. grams

7. The atomic mass of oxygen is _____.

a. 16.0 g

c. 32.0 g

b. 26.0 g

d. 42.0 g

8. Which of the following elements exists as a diatomic molecule?

a. aluminum

c. nitrogen

b. lithium

d. sulfur
9. Which of the following is NOT a representative particle?

a. anion

c. electron

b. cation

d. molecule

10. What is the molar mass of Ammonia CH3?

a. 17.04 g/mol

c. 17.06 g/mol

b. 17.05 g/mol

d. 17.07 g/mol
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