Mole and molar mass

Front

What is the mass of 2.50 mol of oxygen gas O₂?

Back

80 g

Front

What is the definition of molar mass?

Back

Number of grams per one mole of a substance.

Front

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

Back

0.73 moles

Front

Molar mass is in units of ________.

Back

grams/mole

Front

Which represents the greatest mass of sulfur?

Back

6.02 x 10²³ atoms of sulfur.

Front

What is the molar mass of oxygen gas (O₂)?

Back

32 g/mol.

Front

How do you calculate the number of moles from mass?

Back

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

Front

What is Avogadro's number?

Back

6.02 x 10²³ particles per mole.

Front

If you have 1 mole of a substance, how many grams do you have if the molar mass is 18 g/mol?

Back

18 grams.

Front

What is the relationship between moles and molar mass?

Back

Moles = mass (g) / molar mass (g/mol).