Moles to Mass and Molar Mass

Front

What is the definition of molar mass?

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar mass of a compound, sum the molar masses of all the atoms in its chemical formula.

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water (H2O) is approximately 18.02 g/mol.

Front

What is the relationship between moles and mass?

Back

The mass of a substance can be calculated by multiplying the number of moles by the molar mass of the substance.

Front

If you have 2 moles of a substance with a molar mass of 50 g/mol, what is the mass?

Back

The mass would be 100 grams (2 moles x 50 g/mol).

Front

What are the units for molar mass?

Back

The units for molar mass are grams per mole (g/mol).

Front

What is the molar mass of aluminum (Al)?

Back

The molar mass of aluminum (Al) is 27 g/mol.

Front

What is the molar mass of zinc acetate, Zn(C2H3O2)2?

Back

The molar mass of zinc acetate, Zn(C2H3O2)2, is approximately 183.5 g/mol.

Front

How many grams are in 0.5 moles of sodium chloride (NaCl)?

Back

The mass of 0.5 moles of sodium chloride (NaCl) is approximately 29.25 grams (0.5 moles x 58.44 g/mol).

Front

What is the molar mass of iron(III) phosphate, Fe(PO4)2?

Back

The molar mass of iron(III) phosphate, Fe(PO4)2, is approximately 357.5 g/mol.