Question

Please I need help on this question: 158 gram of a gas at STP occupies a volume of 50•00dm^3 what is the relative molecular mass of the gas.

Answer 1

Use PV = nRT and solve for n = number of moles

Then mols = grams/molar mass. You know mols and grams, solve for molar mass. Post your work if you get stuck. Remember to use kelvin for temperature.