Question

Convert into moles 12g of oxygen gas

Answer 1

Molar mass of Oxygen gas = 2 × mass of oxygen atom

M = 2×16

M = 32g/mol

Now,

Moles of O2 = Given mass ÷ Molar mass

Moles of O2 = 12/32 = 3/8 = 0.375 moles...