Front

What is a mole?

Back

A mole is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as containing exactly 6.02 x 10^23 particles (atoms, molecules, ions, etc.).

Front

What is Avogadro's Number?

Back

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

Front

How do you convert moles to grams?

Back

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

Front

What is the molar mass of NaF?

Back

The molar mass of NaF (Sodium Fluoride) is approximately 41.99 g/mol.

Front

How many grams are in 4.5 moles of NaF?

Back

189 g (calculated as 4.5 moles x 41.99 g/mol).

Front

What is the molar mass of BeI2?

Back

The molar mass of BeI2 (Beryllium Iodide) is approximately 260.89 g/mol.

Front

What is the mass of 0.2 moles of BeI2?

Back

52.6 g (calculated as 0.2 moles x 260.89 g/mol).

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

Convert 50.0 grams of H2O to moles.

Back

2.77 moles (calculated as 50.0 g / 18.02 g/mol).

Front

What is the molar mass of H2O?

Back

The molar mass of H2O (Water) is approximately 18.02 g/mol.