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A large flask fitted with a stop-cock is...

A large flask fitted with a stop-cock is evacuated and weighted, its mass is found to be 134.567 g. It is then filled to a pressure of 735 mm at `31^(@)C` with a gas of unknown molecular mass and then reweighed, its mass is 137.456g. The flask is then filled with water and weighed again, its mass is now 1067.9g. Assuming that the gas is ideal, calculate the molar mass of the gas.

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To calculate the molar mass of the gas in the flask, we will follow these steps: ### Step 1: Calculate the mass of the gas First, we need to find the mass of the gas that was filled in the flask. The mass of the empty flask is given as 134.567 g, and the mass of the flask filled with gas is 137.456 g. \[ \text{Mass of gas} = \text{Mass of flask with gas} - \text{Mass of empty flask} \] ...
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