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Title: What is the molar mass of Freon-11 gas if its density is 6.13 g/L at STP? ____ g / mol? Post by: tontron on Oct 6, 2012 What is the molar mass of Freon-11 gas if its density is 6.13 g/L at STP? ____ g / mol
a. .274 b. 3.64 c. 78.2 d. 137 e. 365 Title: What is the molar mass of Freon-11 gas if its density is 6.13 g/L at STP? ____ g / mol? Post by: nzrodrigue on Oct 6, 2012 1 mole of a gas at STP has volume 22.4 litres
Therefore the Freon-11 gas will have molar mass= 22.4*6.13g = 137.312 g/mol answer d. check the units in the calculation - (L * g / L = g) |