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ICSE Class 10 Chemistry 2013 Paper

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Question : 35 of 84
Marks: +1, -0
The vapour density of a gas is 8 . What would be the volume occupied by 24.0 g24.0\,\mathrm{g} of the gas at STP?
Solution:  
Molecular Weight=2×VD\text{Molecular Weight}=2 \times VD
=2×8=2 \times 8
=16 g=16\,\mathrm{g}
Volume of 16 g16\,\mathrm{g} gas at STP =22.4 l=22.4\,\mathrm{l}
∴\therefore Volume of 24 g24\,\mathrm{g} gas at STP =22.416×24=\frac{22.4}{16} \times 24
 = 33.6 litres. \text{ = } 33.6 \text{ litres. }
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