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A balloon vendor at a street fair is using a tank of helium to fillher balloons. The tank has a volume of 150.0 L and a pressureof 120.0 atm at 25 degree celsius. After a while she notices that the valve has not been closed properly. The pressure had dropped to 110.0 atm. How many moles of gas have been lost?

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Category:- Chemistry
Reference No.:- M91011596

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