chemistry

posted by Kat

The gaseous product of a reaction is collected in a 30.0 L container at 37 degrees C. The pressure in the container is 2.5 atm and the gas has a mass of 85.0 grams. What is the molar mass of this gas?

I know the correct answer is 28.8 g/mol but I need to know how to get the answer and which gas law you would use?

  1. DrBob222

    Use PV = nRT and solve for n = number of mols of gas. Don't forget T must be in kelvin. Then n = grams/molar mass. You know grams and n, solve for molar mass.

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