CH-364
Composition of air
Chemistry · Secondary 3 · Medium · Composition of air
A balloon is filled with air. The amount of oxygen in the balloon is 0.42 mol. Assume clean, dry air contains 21% oxygen by mole. How many moles of air are in the balloon?
- 2.0 mol
- 0.088 mol
- 0.21 mol
- 0.79 mol
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.