Mole Conversions (Moles-Grams-Molecules)

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express the amount of a substance. It is defined as the amount of substance that contains as many entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.

Front

How do you convert moles to grams?

Back

To convert moles to grams, use the formula: grams = moles × molar mass (g/mol).

Front

What is the molar mass of a substance?

Back

The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a molecule.

Front

How many molecules are in one mole of a substance?

Back

One mole of any substance contains approximately 6.022 x 10²³ entities, known as Avogadro's number.

Front

What is the relationship between moles and molecules?

Back

The number of molecules can be calculated from moles using the formula: molecules = moles × Avogadro's number.

Front

How do you convert grams to moles?

Back

To convert grams to moles, use the formula: moles = grams / molar mass (g/mol).

Front

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

Back

To find the number of moles from the number of atoms, use the formula: moles = number of atoms / Avogadro's number.

Front

Calculate the number of moles in 3.01x10²² atoms of magnesium.

Back

0.050 moles Mg.

Front

How many grams are in 5.6 moles of sodium bromide (NaBr)?

Back

576 grams.

Front

Calculate the number of molecules in 9.44 moles of AlCl₃.

Back

5.68 x 10²⁴ molecules AlCl₃.