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  1. #1
    I come in Marklar. Marklar MM's Avatar
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    A 4.40-g piece of solid CO2(dry ice) is allowed to vaporize (change from CO2(s)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 in atmospheres?

    Friend needs help.

  2. #2
    CDs Nuts. resistanze's Avatar
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    Probably will get this wrong but I don't wanna complete my philosophy essay.

    Converted CO2 to moles:
    (4.40g)(1mol/12.011) = 0.366 mol

    PV = nRT => P = nRT/V

    P = (0.366mol)(300K)(0.08206 L atm/mol K)/1.00L
    P = 9.01 atm

  3. #3
    I come in Marklar. Marklar MM's Avatar
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    ty ty ty.

  4. #4
    TRU 'cross mah stomach LaMarcus Bryant's Avatar
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    that is such a fundamental equation
    your friend is just lazy

  5. #5
    I come in Marklar. Marklar MM's Avatar
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    that is such a fundamental equation
    your friend is just lazy
    He is not veddy good at chem. Then again, neither am I.

  6. #6
    Maaaaaannnn fuck.... E20's Avatar
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    I compeletly forgot all that. I had Chem my Sop re year and 2 years erased everything I know about that class.

  7. #7
    Mr. John Wayne CosmicCowboy's Avatar
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    Maybe your friend and resistanze should swap homework assignments. Is he any good at philosophy since he sucks at chemistry?

  8. #8
    CDs Nuts. resistanze's Avatar
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    Maybe your friend and resistanze should swap homework assignments. Is he any good at philosophy since he sucks at chemistry?


    Well to late I already handed in my ty 40%-of-my-final-grade paper.

  9. #9
    Corpus Christi Spurs Fan Phenomanul's Avatar
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    Probably will get this wrong but I don't wanna complete my philosophy essay.

    Converted CO2 to moles:
    (4.40g)(1mol/12.011) = 0.366 mol

    PV = nRT => P = nRT/V

    P = (0.366mol)(300K)(0.08206 L atm/mol K)/1.00L
    P = 9.01 atm

    The molecular weight of CO2 is 12.011 + (15.9994 x 2) = 44.0098

    Therefore:

    Converted CO2 to moles:
    (4.40g) (1 mol/44.0098g) = 0.099978 mol

    PV = nRT => P = nRT/V

    P = (0.099978 mol) (0.08206 L atm/mol K) (300 K) / 1.00 L
    P = 2.46 atm

  10. #10
    CDs Nuts. resistanze's Avatar
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    ^^ Bwahaha, touche.

  11. #11
    <><><><><><> ALVAREZ6's Avatar
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    I ing hate chem, I actually had a chem test today...hope I did ok.

  12. #12
    Believe.
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    Remember: if you're not a part of the solution, you're part of the precipitate.

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