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An unknown gas has a mass of 153 g and occupies 15.0 L at a temperature of 300.0 K and a pressure of 2.00 atm. What is its molar mass?M = 153g 鈰?0.082 L鈰卆tm K鈰卪ol 鈰?300.0K 2.00atm 鈰?15.0L = 125 g/mol
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How do you find the molecular weight of an unknown gas?
How would you find the molecular weight of an unknown gas? I would determine the mass of a fixed volume of the gas at a known temperature and pressure and then use the Ideal Gas Law to calculate the molar mass. The mass of an evacuated 255 mL flask is 143.187 g.
How do you calculate the molar mass of a gas?
Given the following data for a gas, use the equation for the ideal gas law to calculate the molar mass. M = mRT/PV = 44.0? OK I understand now — thank you!
What is the molar mass of a substance?
The molar mass is the mass of a substance divided by its number of moles. The unit that is used to measure the molar mass is grams per moles (g/mol). The mass of gas in a one-mole sample is equal to the molar mass of gas. If the molar mass of gas X was 40 g/mol, this means that the weight of gas X in a one-mole sample is equal to 40 grams.
What is the mass of gas in a one mole sample?
The mass of gas in a one-mole sample is equal to the molar mass of gas. If the molar mass of gas X was 40 g/mol, this means that the weight of gas X in a one-mole sample is equal to 40 grams.