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.
Can you calculate molar mass of a gas?
You can calculate anything, in any order. How to calculate molar mass of a gas? This molar mass of gas calculator is a tool that uses the ideal gas law formula to work out an unknown gas’ molar mass, and the number of moles of it present.
How to determine the molar mass of an unknown solute?
We can use a measurement of any one of the following properties to determine the molar mass (molecular weight) of an unknown that is the solute in a solution: Boiling Point Elevation Freezing Point Depression Osmotic Pressure From Boiling Point Elevation
How do you calculate molar mass from Avogadro’s number?
Since we know that 6.022 鈰?1023 represents Avogadro’s number, and is the equivalent of 1 mole, we can describe molar mass as being equal to M = m n, where m – the gas’ mass in grams; n – the number of moles of gas;