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A balloon vendor at a street fair is using a tank of helium to inflate the balloons. The tank has a volume of 75 L and a pressure of 95 atm at 22°C. The valve is not closed completely and some helium leaks out. After some time, the pressure drops to 85 atm. How many moles of helium have been lost? Please show your work. The answer should be in mol and have 3 significant figures. I would also be super tickled if you could include which equation you use to solve it. Thank you!

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A balloon vendor at a street fair is using a tank of helium to inflate the balloons. The tank has a volume of 75 L

and a pressure of 95 atm at 22°C. The valve is not closed completely and some helium leaks out. After some time, the pressure drops to 85 atm. How many moles of helium have been lost?

Please show your work. The answer should be in mol and have 3 significant figures.

I would also be super tickled if you could include which equation you use to solve it. Thank you!

 
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