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chemistry

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A very flexible helium-filled balloon is released from the ground into the air at 20 degree C. The initial volume of the balloon is 5.00 L, and the pressure is 760 mmHg. The balloon ascends to an altitude of 20km, where the pressure is 76.0 mmHg and the temperature is -50 degree C. What is the new volume, V2, of the balloon in liters, assuming it doesn't break or leak?

  • chemistry -

    (P1V1/T1) = (P2V2/T2)
    T must be in kelvin.

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