alleryDensity of methane gas (CH4) at STP:
A0.714 g per litre
B1.428 g per litre
C2.0 g per litre
D3.0 g per litre
Answer & Solution
Correct answer: A. 0.714 g per litre
1. Density = molar mass / molar volume at STP.
2. Molar mass of CH4 = 12 + 4 = 16 g per mol.
3. Molar volume = 22.4 L per mol.
4. Density = 16 / 22.4.
5. = 0.714 g per litre.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 5 'Mole Concept and Stoichiometry'_
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