The Mole

Front

What is a mole?

Back

A mole is a unit of measurement in chemistry that represents 6.02 x 10^23 particles (atoms, molecules, ions, etc.) of a substance.

Front

How many atoms are in 1 mole of any element?

Back

1 mole of any element contains 6.02 x 10^23 atoms.

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10^23, which is the number of particles in one mole of a substance.

Front

How do you convert moles to particles?

Back

To convert moles to particles, multiply the number of moles by Avogadro's number (6.02 x 10^23).

Front

How do you convert particles to moles?

Back

To convert particles to moles, divide the number of particles by Avogadro's number (6.02 x 10^23).

Front

What is the relationship between moles and mass?

Back

The mass of a substance in grams can be calculated by multiplying the number of moles by the molar mass (g/mol) of the substance.

Front

What is molar mass?

Back

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

Front

If you have 2 moles of H2O, how many molecules do you have?

Back

2 moles of H2O contain 2 x (6.02 x 10^23) = 1.204 x 10^24 molecules.

Front

How many moles are in 12 grams of carbon (C)?

Back

12 grams of carbon is 1 mole, as the molar mass of carbon is 12 g/mol.

Front

What is the formula to calculate moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol).