A balloon vender at a street fair is using a tank of helium tofill her balloons.

Question

A balloon vender at a street fair is using a tank of helium tofill her balloons. The tank has a volume of 146 L and apressure of 145 atm at 23 degrees C. After a while shenotices that the valve has not been closed properly. Thepressure had dropped to 135 atm (the tank is still at 23 degreesC). How many moles of gas has she lost? ____ moles A balloon vender at a street fair is using a tank of helium tofill her balloons. The tank has a volume of 146 L and apressure of 145 atm at 23 degrees C. After a while shenotices that the valve has not been closed properly. Thepressure had dropped to 135 atm (the tank is still at 23 degreesC). How many moles of gas has she lost? ____ moles

Explanation / Answer

other ideal gas problem, we can use the ideal gas equation PV =nRT. just need to calcule the moles at the start, the moles at the endand substract. i have told in other problem how to make it, in this one i justgive you the results. moles at the start: n = 872.2 moles. moles at the end: n = 812 moles. moles lost = 60.2

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