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6 December, 19:52

A 4.35-g piece of solid co2 (dry ice) is allowed to vaporize (change to co2 (g)) in a balloon. the final volume of the balloon is 1.00 l at 300. k. what is the pressure of the gas?

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  1. 6 December, 20:48
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    Answer is: the pressure of carbon dioxide is 2.41 atm.

    n (CO ₂) = m (CO₂) : M (CO₂),

    n (CO₂) = 4.35 g : 44 g/mol.

    n (CO₂) = 0.098 mol; amount of substance.

    V = 1.00, volume of gas.

    T = 300 K; temperature.

    R = 0.08206 L·atm/mol·K, universal gas constant.

    Ideal gas law: p·V = n·R·T.

    p = n·R·T / V.

    p = 0.098 mol · 0.08206 L·atm/mol·K · 300 K / 1.00 L.

    p = 2.41 atm.
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