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? asked in Science & MathematicsChemistry · 1 decade ago

What is the molar mass of this gas?

a well known ideal gas is enclosed in a container having volume 500cm^3 at STP.its mass comes out to be 0.72 g.what is the molar mass of this gas?

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  • Arjun
    Lv 4
    1 decade ago
    Favorite Answer

    At STP 22400 ml of a gas is 1 mole

    500 ml of a gas = 0.0223 moles

    0.0223 moles weighs 0.72 grams

    1 mole weighs = 32.286 grams

  • Anonymous
    1 decade ago

    Apply Ideal Gas Equation

    PV = nRT

    P = Pressure

    V = Volume

    n = Moles (gram/molecular mass)

    R = Ideal Gas Constant

    T = Temperature

    take care of the units

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