A 6.5 L sample of nitrogen at 24 degree Celsius and 1.5 atm is allowed to expand to 13.0 L. The temperature increases to 40 degrees Celsius. What is the final pressue?

I have calculated the first part:
(1.5)(6.5) = 13x = 0.75 atm
but I am not sure what to do about the increase of 40 degree Celsius. Please advise.

Question

A 6.5 L sample of nitrogen at 24 degree Celsius and 1.5 atm is allowed to expand to 13.0 L. The temperature increases to 40 degrees Celsius. What is the final pressue?

I have calculated the first part:
(1.5)(6.5) = 13x   => 0.75 atm
but I am not sure what to do about the increase of 40 degree Celsius. Please advise.

anonymous · Answer

we use our first gas law which is $${P_{1} V_{1} \over T_{1}} = {P_{2} V_{2} \over T_{2}}$$ Just convert the degrees to K by adding 273.15 to each C then solve. You have everything but P2