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Created for Albert.io. Copyright 2016. All right reserved.

A group of physics students studies the behavior of a gas by pumping air into a rigid $2.0\text{ liter}$ bottle and then measuring the increasing mass of the bottle with a digital scale. The students worked slowly and all pressure readings were taken with the gas at room temperature ($293\text{ K}$). The five measurements are plotted on the graph above.

By what factor did the number of moles of gas in the bottle increase over the course of the five measurements?

A

Factor of $2$.

B

Factor of $25$.

C

Factor of $100$.

D

The mass of the bottle increased because of the increased pressure, not an increase in number of moles.

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