Question

A 726 mL gas sample at STP is compressed to a volume of 117 mL, and the temperature is increased to 23◦C. What is the new pressure of the gas in Pa?
Answer in units of Pa.
I got 2.49647

The volume of a gas at 26◦C and 0.4 atm is 67 mL. What volume will the same gas sample occupy at standard conditions?
Answer in units of mL.
I got .10684
PV = kT
So, PV/T = k, a constant.
So, you want to find P such that
117P/(273+23) = 726*1/273
Now convert that from atm to Pa

Do the other in like wise. Find V such that
1*V/273 = 0.4*67/(273+26)

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