We have to find out what would this picture look like if we wanted to decrease the pressure by a factor of 2.
This means that we have to establish a relation between pressure and amount of a gas.
Recall from the ideal gas equation:
It could be rearranged as:
Consider the sample of gas depicted below:
What would the drawing look like if the volume and temperature remained constant while you removed enough of the gas to decrease the pressure by a factor of 2?
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What scientific concept do you need to know in order to solve this problem?
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