The Mole and Molar Mass

Front

1 mole of Ca and 1 mole of Na have the same number of atoms.

Back

True

Front

1 mole is equivalent to 6.02 x 10^23.

Back

True

Front

What is molar mass?

Back

The mass of a mole of atoms.

Front

What is the definition of molar mass?

Back

Number of grams per one mole of a substance.

Front

Molar mass is in units of ________.

Back

grams/mole.

Front

What is Avogadro's number?

Back

6.02 x 10^23 particles per mole.

Front

How do you calculate the molar mass of a compound?

Back

Add the atomic masses of all atoms in the formula.

Front

What is the molar mass of water (H2O)?

Back

18 grams/mole.

Front

If you have 2 moles of NaCl, how many grams do you have?

Back

Approximately 117 grams (molar mass of NaCl is 58.5 g/mol).

Front

What does the term 'mole' represent in chemistry?

Back

A quantity of substance that contains 6.02 x 10^23 entities.