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The volume occupies by 1 58g of a gas at s t p ... - JAMB Chemistry 1990 Question

The volume occupies by 1.58g of a gas at s.t.p is 500cm3. What is the relative molecular mass of the gas?

(G.M.V at s.t.p = 22.40dm3)
A
28
B
32
C
44
D
71
correct option: d
500cm3 = 1.58g

=22400cm = (1.58g)/(500cm3) χ 22400cm3) = 70.78 g
= 71g
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