U2, T3, Problem Set #1

Problem Set #1

1. What is the molar mass of sodium (Na) in g/mol?

Molar Mass of sodium = 22.99 g/mol

2. What is the molar mass of diatomic oxygen (O₂) in g/mol?

Molar Mass of diatomic oxygen = 2O

Molar Mass of diatomic oxygen = 2 (16.00g/mol)

Molar Mass of diatomic oxygen = 32.00 g/mol

3. What is the molar mass of water (H₂O) in g/mol?

Molar Mass of water = 2H + 1O

Molar Mass of water = 2 (1.01 g/mol) + 1 (16.00 g/mol)

Molar Mass of water = 18.02 g/mol

4. What is the molar mass of calcium phosphate (Ca₃(PO₄)₂) in g/mol?

Molar Mass of calcium phosphate = 3Ca + 2P + 8O

Molar Mass of calcium phosphate = 3 (40.08 g/mol) + 2 (30.97 g/mol) + 8 (16.00 g/mol)

Molar Mass of calcium phosphate = 310.18 g/mol