Q.

The density of a gas at STP is 2 g/l . Its molecular weight is

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a

22.4

b

56

c

44.8

d

30

answer is C.

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Detailed Solution

d=molar massmolar volume molar mass=d×molar volume                         =2×22.4                          =44.8 g                       molecular wt is  44.8
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