A gas occupies 2.7 liters and weighs 1.72 grams at STP. What is the molecular weight?
2.7 L of the weighs 1.72 g
=> 22.4 L of the gas weighs = 1.72 * 22.4/2.7 g
= 14.2696 g
since 1 mole of any gas occupies a vol of 22.4 L at STP.
=> molecular weight of the gas = 14.2696 (ans)
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