Molecular and Formula Mass

________ is the average mass of one atom of an element compared to one-twelfth the mass of an atom of carbon-12.

• Relative atomic mass

• Relative molecular mass

• Relative formula mass

• Relative ionic mass

________ is the average mass of one atom of one molecule compared to one-twelfth the mass of an atom of carbon-12.

• Relative atomic mass

• Relative ionic mass

• Relative molecular mass

• Relative formula mass

________ is the average mass of one atom of one formula unit compared to one-twelfth the mass of an atom of carbon-12.

• Relative ionic mass

• Relative atomic mass

• Relative molecular mass

• Relative formula mass

What is the unit of relative molecular mass?

• grams (g)

• no unit

• grams per mole (g/mol)

• pounds

The relative atomic mass is the average mass of an atom compared to:

• the mass of one atom of carbon-12

• the mass of 1/12 atom of carbon-12

• the mass of one atom of carbon-14

• the mass of 1/14 atom of carbon-14

What is the relative formula mass of ammonium nitrate?

[N]=14, [O]=16, [H]=1.

• 90

• 31

• 80

• 60

What is the relative atomic mass of oxygen?

[O]=16

• 32

• 16

• 8

• 24

What is the relative molecular mass of oxygen compound?

[O]=16

• 16

• 8

• 32

• 6

What is the relative atomic mass of calcium?

[Ca]=40

• 40

• 20

• 12

• 18

What is the relative molecular mass of nitrogen gas?

[N]=14

• 14

• 28

• 7

• 16