how do you find the volume of a certain quantities at STP ?

gasses at STP ex. 60 g of CO2

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  • Anonymous
    1 decade ago
    Favorite Answer

    STP means

    273.15 K

    1 bar.

    Use ideal gas law

    PV=nRT

    P is the pressure in bar

    V is the volume in L

    n is the number of moles of gas

    R is the ideal gas constant = 0.08314 bar L / mol K

    T is the temperature in K

    n=m/M

    Hence for your 60 grams of CO2 (M=44g/mol)

    V=60/44 mol * 0.08314 bar L/mol K * 273.15 K /1 bar = 31 L

  • 1 decade ago

    1 mole ( Gram molecular weight) of a compound or element is the atomic mass expressed in grams. The atomic mass can be found on a Perodic Chart of the elements.

    1 mole of a gas at STP occupies 22.4 liters of space.

    Atomic mass of Carbon is 12 grams/mole.

    Atomic mass of Oxygen is 16 grams/mole.

    Therefore the atomic mass of CO2 is (2x16) + 12 = 44.

    60 grams of CO2 = 60 / 44 = 1.36 moles.

    1.36 moles x 22.4 Liters = 30.46 Liters

  • Anonymous
    1 decade ago

    1 mole of any gas occupies 22.4L at STP, so you figure out the moles of CO2, and multiply by 22.4L.

  • 1 decade ago

    Mole mapping! 60 of CO2 = ? moles. Moles x 22.4 L/mol = Liters.

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