Posted by Coug on .
what is the initial temperature (in degrees C) of a system that has the pressure decreased by 10 times while the volume increased by 5 times with a final temperature of 150 K?
a)27
b)75
c)300
d)198
e) none of the above
Please explainI need to know how to do thisthis is only a practice question.

chemistry 
DrBob222,
Use (P1V1)/T1 = (P2V2)/T2
Make up values for those not listed, then multiply or divide by 10 or 5 to obtain the new values. Don't forget to use Kelvin for temperature. When you solve for the final T, remember to subtract 273 to change Kelvin back to C.