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Question

4.4g of an unknown gas occupies 2.24L of volume at standard temperature and pressure. The gas may be:

A
Carbon dioxide
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B
Carbon monoxide
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C
Oxygen
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D
Sulphur dioxide
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Solution

The correct option is B Carbon dioxide
2.24L of gas has mass =4.4gm

22.4L of gas has mass =4.42.24×22.4=44

So, given gas is CO2 because CO2 has molecular mass =44.

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