Question on: JAMB Chemistry - 2005
The density of a certain gas is 1.98gdm-3 at s.t.p. What is the molecular mas of the gas?
A
44.0 g
B
54.0 g
C
26.0 g
D
31.0 g
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Correct Option: A
Density = mass/volume
∴ 1.98 = molecular mass/22.4
molecular mass = 1.98 * 22.4 = 44.35 ≅ 44.05
∴ 1.98 = molecular mass/22.4
molecular mass = 1.98 * 22.4 = 44.35 ≅ 44.05
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