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A balloon containing 0.148 mol Ne gas has a volume of 1.9 L at 1.9 atm...

A balloon containing 0.148 mol Ne gas has a volume of 1.9 L at 1.9 atm and 28°C. How many grams of neon should be added to the balloon to increase the volume to 3.4L at the same pressure and temperature?

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