Chemistry, ideal gas law and Dalton's law?

What is the volume of a container of it holds 33 grams of carbon dioxide at STP?

Also

Calculate the number of moles of gas in a 3.0L balloon of AR at STP

thankyou!!

1 Answer

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  • Lexi R
    Lv 7
    9 years ago
    Favorite Answer

    STP is standard temperature (0 deg Celcius) and pressure (1.00 atm)

    At STP 1 mole of any ideal gas occupies a volume of 22.4 L

    moles CO2 = mass / molar mass

    = 33 g / 44.01 g/mol

    = 0.7498 mol

    Volume at STP = moles x 22.4 L/mol

    = 0.7498 mol x 22.4 L/mol

    = 16.796 L

    = 17 L (2 sig figs)

    At STP moles = volume (L) / 22.4 L/mol

    moles Ar = 3.0 L / 22.4 L/mol

    = 0.13 mol

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