Mole Race

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

What is Avogadro's number?

Back

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

Front

How do you convert moles to molecules?

Back

To convert moles to molecules, multiply the number of moles by Avogadro's number (6.02 x 10^23).

Front

How do you convert molecules to moles?

Back

To convert molecules to moles, divide the number of molecules by Avogadro's number (6.02 x 10^23).

Front

What is the molar mass of sodium chloride (NaCl)?

Back

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

Front

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

Back

To calculate the number of formula units, multiply the number of moles by Avogadro's number (6.02 x 10^23).

Front

What is the relationship between volume and moles of a gas at STP?

Back

At standard temperature and pressure (STP), 1 mole of an ideal gas occupies 22.4 liters.

Front

How do you calculate the number of moles from volume of a gas?

Back

To calculate moles from volume of a gas at STP, divide the volume in liters by 22.4 L/mol.

Front

What is the molar mass of water (H2O)?

Back

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

Front

How do you calculate mass from moles?

Back

To calculate mass from moles, multiply the number of moles by the molar mass of the substance.