Calculating Molar Mass

What does molar mass represent?

• The mass of a single atom of a substance.

• The mass of one mole of a substance.

• The atomic number of an element.

• The density of a substance.

What is the molar mass of carbon monoxide (CO)? (Atomic mass of C = 12.01 g/mol, O = 16.00 g/mol)

• 12.01 g/mol

• 16.00 g/mol

• 28.01 g/mol

• 44.01 g/mol

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Calculate the molar mass of ammonia (NH3). (Atomic mass of N = 14.01 g/mol, H = 1.01 g/mol)

• 15.02 g/mol

• 17.04 g/mol

• 14.01 g/mol

• 3.03 g/mol

Determine the molar mass of calcium hydroxide, Ca(OH)2. (Atomic mass of Ca = 40.08 g/mol, O = 16.00 g/mol, H = 1.01 g/mol)

• 57.10 g/mol

• 74.10 g/mol

• 40.08 g/mol

• 34.02 g/mol