Molar Mass and Mole

Front

What is a mole?

Back

A mole is a unit of measurement in chemistry that represents 6.022 x 10^23 particles (atoms, molecules, ions, etc.).

Front

How do you calculate the number of moles from particles?

Back

Number of moles = Number of particles / Avogadro's number (6.022 x 10^23).

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

How do you calculate molar mass?

Back

To calculate molar mass, sum the atomic masses of all atoms in a molecule based on the periodic table.

Front

What is the molar mass of water (H2O)?

Back

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

Front

What is the unit for average atomic mass given by the periodic table?

Back

The unit for average atomic mass is atomic mass unit (amu).

Front

How many moles are in 12.7g of CaF2 if the molar mass is 78.07 g/mol?

Back

0.16 mol.

Front

What is the molar mass of calcium carbonate (CaCO3)?

Back

The molar mass of calcium carbonate is 100 g/mol.

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance by its molar mass.

Front

What is the formula to find the number of particles from moles?

Back

Number of particles = Number of moles x Avogadro's number (6.022 x 10^23).