[nikita]

I have attempted this problem numerous times and keep getting the same answer, which, apparently, is the wrong one.  It is just a gas question with T₂ as the unknown.

The volume of a gas is 36.0 mL at 10C and 4.50 atm.  At what temperature C will the gas have a pressure of 3.50 atm and a volume of 85.0 mL?

I used the formula P₁V₁/T₁ = P₂V₂/T₂
and inserted the following:
(4.50x.036L/10C) = (3.50x.085L/T₂)

i rearranged the variables to solve for T2 and have gotten 18.4 C every time.  What am i doing wrong?

[macman104]

Do you need to put your answer in K?

[Mitch]

You need to do the problem in Kelvin.

[nikita]

sorry, i didnt say it originally, but i tried it in kelvin first and got the wrong number that way, so i tried it in celsius next and it was also wrong.  i got 520K and i subtracted 273 and got 247C.  im doing a practice test from my prof's class last year and the answer says 310C. 

[Borek]

I got 247 °C as well.

[JGK]

247 from me also