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An evacuated glass vessel weighs 49 g. When filled with liquid of 0.95 g cm^{-3} density, it weighs 144 g and if filled with gas at 760 mm Hg and 27℃ temperature, it weighs 49.5 g. The molar mass of the gas is (1) 189 g/mol (2) 123 g/mol (3) 100 g/mol (4) 95 g/mol

Answer» An evacuated glass vessel weighs 49 g. When filled with liquid of 0.95 g cm^{-3} density, it weighs 144 g and if filled with gas at 760 mm Hg and 27℃ temperature, it weighs 49.5 g. The molar mass of the gas is (1) 189 g/mol (2) 123 g/mol (3) 100 g/mol (4) 95 g/mol


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