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A sample of oxygen is collected in a 172 mL

container over water at 15C, and the barom-

eter reads 754 torr. What volume would the

dry gas occupy at 778 torr and 15C? Water's

partial pressure at 15C is 12:8 torr. Answer

in units of mL.

2)attempt to answer:

pv=PV

temp constant

(754+12.8)*172=(778+12.8)V

V=166.779969

I'm not exactly sure if this is the right way to do it since the question's wording is a bit confusing and there seems to be some useless information. Can anyone tell me if my answer is right here?

Thanks