The temperature is -34°c. what is the change in volume, Ask an Expert

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A sealed balloon is filled with 1.00 L helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 240. torr and the temperature is -34°C. What is the change in volume of the balloon as it ascends from 1.00 atm to a pressure of 240. torr?

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