Answers

2015-10-15T14:01:26+05:30
At STP, 1 mole occupies = 22.4 l
thus 5.6 l contains = 5.6/22.4 = 0.25 mole of the gas

0.25mole = 7.5 g
1 mole = 7.5/0.25 = 30g

The molar mass of gas is 30g.
The gas can be NO.
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