The mass of 1 litre of helium under a pressure of 2 atm and at a tempe

1.	The mass of 1 litre of helium under a pressure of 2 atm and at a temperature of 27^(@)C is
Answer» 0.16 g 0.32 g 0.48 g 0.64 g Solution :`"No. of moles (n)"=(PV)/(RT)=(2xx10^(5)xx10^(-3))/(8.3xx300)=0.08` `"MASS of one ofHe"=4G` `"Mass of n moles "=(nxx4)=(0.08xx4)=0.32g`

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