A helium tank contains 252 leters of helium at 84 atm, Ask an Expert

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A helium tank contains 25.2 leters of helium at 8.4 atm pressure. Determine how many 1.5-L balloons at 755 mm Hg can be inflated with the gas in the tank, assuming that the tank will also have to contain He at 755 mm Hg after the balloons are filled. The temperature is 25 degrees C in all cases

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