Question on: JAMB Chemistry - 2024
If 11.0g of a gas occupies 5.6 dm3 at s.t.p., calculate its vapour density (1 mole of a gas occupies 22.4 dm3).
A
22
B
44
C
66
D
88
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Correct Option: A
- Calculate molar mass:
5.6 dm3 has mass 11.0 g.
1 mole = 22.4 dm3.
Molar mass = (11.0 / 5.6) × 22.4 = 44 g/mol. - Vapour density = Molar mass / 2 = 44 / 2 = 22.
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