The volume of 2.5 moles of oxygen at s.t.p is? [Molar volume of a gas at s.t.p = 22.4 dm³]

A. 50.0 dm³
B. 84.0 dm³
C. 28.0 dm³
D. 56.0 dm³

Correct Answer:

Option D – 56.0 dm³

Explanation

1 mole of gas at s.t.p = 22.4
2.5 moles → 2.5 X 22.4 = 56.00 dm³