How to Calculate Final Pressure of an Ideal Gas with Changing Conditions?

[astru025]

Ideal gas laws question.. Help!

Homework Statement

Volume of 150cm^3 of an ideal gas has an initial temp. Of 20 degrees celcius and an initial pressure of 1 atm. What is the final pressure if the volume is reduced to 100cm^3 and the temp is raised to 40 degrees celcius.

Homework Equations

Pi x Vi / Ti = Pf x Vf / Tf

The Attempt at a Solution

1 atm x 150 cm^3 / 293 K = P x 100cm^3 / 313 K.
I keep getting 1.6, this answer is incorrect. I'm pretty sure my units are mixed up but I'm not sure what I need to fix. Any help would be great! Thanks

 

[Chestermiller]

You really don't need to fix any units in this particular calculation. It looks like your answer is correct, unless you are required to give the answer as 1.6 atm.

Chet