Avogadro and Moles

Front

What are the units of a mole?

Back

mol

Front

A mole is:

Back

The standard unit for the amount of a substance.

Front

Find the molar mass of KCl.

Back

74 g/mol

Front

A mole is a measured value such as mass or length. It is not a counted number.

Back

FALSE

Front

What are the units of molar mass?

Back

grams/mole

Front

Define 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

What does molar mass represent?

Back

Molar mass represents the mass of one mole of a substance, expressed in grams.

Front

How do you calculate the number of moles from mass?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the relationship between moles and particles?

Back

1 mole of any substance contains Avogadro's number of particles.

Front

What is the significance of the mole in chemistry?

Back

The mole allows chemists to count quantities of atoms and molecules in a manageable way.