Lithium Carbonate and Molar Mass

The video tutorial explains how to calculate the molar mass of lithium carbonate (Li2CO3). It begins by identifying the atomic masses of lithium, carbon, and oxygen from the periodic table. The tutorial then demonstrates the calculation of the molar mass by multiplying the atomic masses by the number of each type of atom in the compound and summing the results. The final molar mass is calculated to be 73.89 grams per mole. The video concludes with a summary of the calculation and a thank you from Dr. B.

What is the atomic mass of lithium as found on the periodic table?

• 6.94

• 12.01

• 15.999

• 16.00

How many lithium atoms are present in lithium carbonate?

• 1

• 2

• 3

• 4

What is the atomic mass of carbon used in the calculation?

• 6.94

• 12.01

• 15.999

• 16.00

How many oxygen atoms are present in lithium carbonate?

• 4

• 1

• 2

• 3

What is the total mass of oxygen in lithium carbonate?

• 16.00

• 32.00

• 64.00

• 48.00

What is the final molar mass of lithium carbonate?

• 75.89 g/mol

• 74.89 g/mol

• 72.89 g/mol

• 73.89 g/mol

What units are used for molar mass?

• grams

• moles

• grams per mole

• moles per gram