Chemistry

An unknown gas has a density of 2.36g/L at 298K and 110 kPa. Calculate its molar mass.

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asked by Amy
  1. I would convert 110 kPa to atm and use the PV = nRT. We need to work on that formula little since density is given. Since n = moles/molar mass we can rewrite it as
    PV = (grams/molar mass)*RT and
    PV*molar mass = grams*RT
    Since density is g/L, we can rewrite it as
    P*molar mass = (g/V)RT and
    P*molar mass = density*RT
    Solve for molar mass.

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    posted by DrBob222

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