Mole Conversions

Front

What is a mole?

Back

A mole is a unit of measurement in chemistry that represents 6.02 x 10²³ particles (atoms, molecules, ions, etc.) of a substance.

Front

How do you convert moles to molecules?

Back

To convert moles to molecules, multiply the number of moles by Avogadro's number (6.02 x 10²³).

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10²³, which is the number of particles in one mole of a substance.

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).

Front

What is the molar mass of water (H₂O)?

Back

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

Front

How many moles are in 18 grams of water?

Back

1 mole of water (since 18 g / 18.02 g/mol ≈ 1).

Front

What is the mass of one mole of carbon (C)?

Back

The mass of one mole of carbon is approximately 12.01 g.

Front

How do you find the number of atoms in a given mass of an element?

Back

Convert the mass to moles using the molar mass, then multiply by Avogadro's number.

Front

How many molecules are in 1 mole of NaCl?

Back

1 mole of NaCl contains 6.02 x 10²³ molecules.

Front

What is the relationship between moles and volume for gases at STP?

Back

At standard temperature and pressure (STP), 1 mole of any gas occupies 22.4 liters.