Mole Conversions (Moles-Grams-Molecules)

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.) of a substance.

Front

How do you convert moles to grams?

Back

To convert moles to grams, use the formula: grams = moles x 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).

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 Avogadro's number?

Back

Avogadro's number is 6.022 x 10^23, which is the number of particles in one mole of a substance.

Front

How do you calculate the number of molecules in a given number of moles?

Back

To calculate the number of molecules, use the formula: molecules = moles x Avogadro's number (6.022 x 10^23).

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What is an empirical formula?

Back

An empirical formula is the simplest whole-number ratio of elements in a compound.

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What is a molecular formula?

Back

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

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How do you determine the empirical formula from the molecular formula?

Back

To determine the empirical formula, divide the subscripts in the molecular formula by their greatest common divisor.

Front

What is percentage composition?

Back

Percentage composition is the percentage by mass of each element in a compound.