Chemistry

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Please let me know how you would approach the gas law problem. Here goes:

If the pressure exerted on the gas in a weather ballon decreases from 1.01 atm to 0.562 atm as it rises. By what factor will the volume of the gas in the ballon increase as it rises?

I can't seem to figure out which gas law mathematical equation to apply.
Thanks for being helpful.

  • Chemistry -

    It's just P and V; therefore,
    P1V1 = P2V2 and you want to solve for V1/V2

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