1. Determine the unit of 'R' from dimensional analysis.
Mass of 112 mL of a certain gas is 0.22 g at STP. How many molecules are there in the
sample of gas ? What is the molar mass of the gas?
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The mass in gms of 112 ml of gas at STP is
Mass of 112 mL of a certain gas is 0.22 g at STP.
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