STANDARDChemistry-States of Matter
STANDARD Chemistry Ideal Gas Equation MCQ Question
Type: MCQ-numerical-Medium
The density of a gas is 1.78 g L⁻¹ at STP. The weight of one mole of a gas is
A
39.9 g
B
22.4 g
C
3.56 g
D
29 g
Correct Answer
Option A
Detailed Explanation
1 mole occupies a volume of 22.4 L at STP. Mass of 1 mole of a gas = Density × Volume = 1.78 × 22.4 = 39.9 g.
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