Friend's fiancee gave this problem on a final she was administering and isn't sure how the answer key is right:
Boyle's law describes the inverse variation between the volume of a gas and the pressure, y, exerted on it. A balloon with a volume of 2.25 liters is sealed in a bell jar, and air is pumped out. As the air is pumped out, the balloon expands. Which equation could be used to calculate the pressure exerted on the balloon?
Boyle's Law: P1V1=P2V2=k (presumably, this isn't given in the problem)
The Attempt at a Solution
The question is worded as is, we've argued about specific meanings for like half an hour
Answer key says choice B) y=2.25/k
Everyone and their mother says C) y=k/2.25
I mean, by dimensional analysis alone it should be C, right?