What is the pressure in terms of pi?

[teggenspiller]

Homework Statement

The volume of a fixed mass of an ideal gas is doubled while the temperature is increased from 100 K to 400 K. What is the final pressure in terms of its initial pressure pi?

Homework Equations

in terms of pi? what?? does that stand for ' pressure initial or what'/ how do i go about solivng this>

The Attempt at a Solution

PV=nRT

R= constant = PV/nT

the fixed mass implies that n=constant so
PV/T=PV/T

and plug and solve. but i am still confused about what the pi means? All the mult choice answers are in p.i. as welll

 

[gneill]

Here pi is just a variable name, like x, or y, or P, or V. It's the initial pressure in this case.

 

[teggenspiller]

thanks gniell