Understanding Formula Mass and Molar Mass

What is the formula mass of ammonium nitrate (NH4NO3)?

• 80.5 AMU

• 75.0 AMU

• 85.0 AMU

• 90.5 AMU

What is the atomic mass of nitrogen used in the calculation of ammonium nitrate's formula mass?

• 14.01 AMU

• 12.01 AMU

• 16.00 AMU

• 1.01 AMU

How is the molar mass of a compound related to its formula mass?

• They are numerically equal but have different units.

• They are unrelated.

• Molar mass is always double the formula mass.

• Formula mass is always greater than molar mass.

If you have 10.0 grams of ammonium nitrate, how many moles do you have?

• 0.100 moles

• 0.150 moles

• 0.200 moles

• 0.125 moles

Which of the following terms is equivalent to formula mass for molecular compounds?

• Molecular mass

• Ionic mass

• Atomic mass

• Elemental mass