Question 1182959
.
A piston-cylinder of gas has an initial pressure of 25 psi.  The volume is increased to 2.5 times the initial volume.  
The temperature is increased from 290oC to 720oC.  What is the final pressure.  Be careful,.. SYW!... all of it
~~~~~~~~~~~~~~~




Calculations by @Boreal are totally wrong due to different reasons,


one of which is that he does not convert Celsius temperatures to Kelvin temperatures.