Mole Conversions

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express the amount of a substance, defined as exactly 6.022 x 10²³ particles (atoms, molecules, ions, etc.).

Front

What is the molar mass of an element?

Back

The molar mass of an element is the mass of one mole of that element, typically expressed in grams per mole (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

What is Avogadro's number?

Back

Avogadro's number is 6.022 x 10²³, which is the number of particles in one mole of a substance.

Front

How many moles are in 56 grams of CO?

Back

To find the number of moles, divide the mass (56 g) by the molar mass of CO (28 g/mol), resulting in 2 moles.

Front

What is the formula to calculate the mass of a substance from moles?

Back

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

Front

How many molecules are in 1 mole of a substance?

Back

1 mole of a substance contains 6.022 x 10²³ molecules.

Front

What is the molar mass of NaCl?

Back

The molar mass of NaCl (sodium chloride) is approximately 58.44 g/mol.

Front

If you have 0.5 moles of NaCl, how many grams do you have?

Back

0.5 moles of NaCl is equal to 0.5 × 58.44 g/mol = 29.22 grams.

Front

What is the relationship between moles and molecules?

Back

The number of moles is directly proportional to the number of molecules, calculated using Avogadro's number.