alleryThe mass of 22.4 litres of any gas at STP equals its molecular weight in:
AGrains
BGallons
CGauges
DGrams
Answer & Solution
Correct answer: D. Grams
1. This is the molar volume of a gas at standard conditions.
2. One mole is the molecular weight expressed in a mass unit.
3. The mass of 22.4 litres of any gas equals its molecular weight in grams at STP.
4. So the answer is grams.
_Source: syllabus Physics Part II, Ch 12 'Kinetic Theory'_
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