Mole Conversions Practice

Front

What are the units for molar mass?

Back

g/mol

Front

How many moles are in 4.50 x 10^23 atoms of aspirin?

Back

0.757 moles

Front

How many moles are in 15 grams of Lithium?

Back

2.14 moles

Front

What is the molar mass of table salt (NaCl)?

Back

58.5 g/mol

Front

What is the mass of 4.0 moles of CH4?

Back

64 g

Front

Define molar mass.

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is Avogadro's number?

Back

6.022 x 10^23, the number of atoms or molecules in one mole of a substance.

Front

How do you convert grams to moles?

Back

Divide the mass of the substance (in grams) by its molar mass (in g/mol).

Front

What is the formula to calculate moles from volume of gas at STP?

Back

Moles = Volume (L) / 22.4 L/mol.

Front

What is the molar mass of water (H2O)?

Back

18.02 g/mol.