Question

Calculate the molecular weight of 2.6 g of a gas which occupies 2.24 lits. at 0°C and 760 mm press.

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Answer

2.24 lit volume of gas weighs 2.6 g

∴ 22.4 lit volume of gas weighs = 2.6\over 2.24 × 22.4

= 26 g

As 22.4 lit of gas at s.t.p. weighs 26 g

∴ Molecular weight = 26 g

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