Question

The number of moles of carbon dioxide which contain 8 g of oxygen is

• A. 0.5 mol
• B. 0.20 mol
• C. 0.40 mol
• D. 0.25 mol

Answer 1

The correct option is D 0.25 mol

One mole of CO₂ contains 32 g of O
8 g of O is present in $\frac{8}{32}=0.25mol$