Calculate the mass of chlorine gas which occupies a volume of 1.12 dm³ a volume of 1.12 dm³ at s.t.p [Cl = 35.5, 1 mole of gas occupies 22.4 dm³ at s. t. p ]

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A. 1.80g
B. 3.55g
C. 7.10g
D. 15.50g

Correct Answer: Option B

B. 3.55g

Explanation

1 mole Cl2 occupy 22.4dm³
i.e 2 x 35.5 → 22.4 ; x → 1. 12
:. x = 1.1222.4 x 2 x 35.5 = 3.55

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