Calculate the molar mass of the unknown gas
The mass of an evacuated 255ml flask is 143.187g. The mass of the flask filled with 267torr of an unknown gas at 25*C is 143.289g. Calculate the molar mass of the unknown gas.
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Calculate the molarity and the molality of an NH3 solution made up of 27.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
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