Mole Conversions (Moles-Grams-Molecules)

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 do you convert moles to molecules?

Back

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

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 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 molar mass?

Back

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

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar mass, sum the atomic masses of all the atoms in the molecular formula.

Front

What is the empirical formula?

Back

The empirical formula is the simplest whole-number ratio of atoms of each element in a compound.

Front

What is the molecular formula?

Back

The molecular formula shows the actual number of atoms of each element in a molecule of a compound.

Front

How do you find the number of grams in a given number of atoms?

Back

To find grams from atoms, first convert atoms to moles using Avogadro's number, then convert moles to grams using the molar mass.

Front

If you have 1 mole of a substance, how many molecules do you have?

Back

You have 6.02 x 10^23 molecules.