ICSE Class 10 Chemistry 2017 Solved Paper

Question : 61

Total: 86

The mass of 11.2 litres of a certain gas at s.t.p. is 24 g. Find the gram molecular mass of the gas.

Solution:

The mass of 22.4l of a gas at STP is equal to its gram molecular mass.
11.2 litres of gas at STP weighs =24g
∴22.4 litres of gas at STP weigh
‌=‌

11.2

×22.4
‌=48‌gm

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