Question: what is the molar mass of lithium oxide li20?
Answer: The molar mass of Lithium is 6.9 g/mol and Oxygen 16.0 g/mol. the molar mass of lithium Li2O is 6.9 × 2 = 13.8 g/mol. Add the molar masses of Lithium and Oxygen together: 13.8 g/mol + 16.0 g/mol therefore the molar mass of Lithium oxide is 29.8 g/mol.