# How do i solve this constant volume thermo problem?

I have been struggling for weeks on this thermo problem. A volume of air (assuming ideal gas) P1 = 1 bar P2 = ??? T1 = 300K T2 = 700K V1 = V2 M1 = M2 i have a chart that relates temperature in Rº to sº (Btu/lbm*R) what steps do i take to solve this problem??? I am supposed to be able to do it without... show more I have been struggling for weeks on this thermo problem.
A volume of air (assuming ideal gas)
P1 = 1 bar
P2 = ???
T1 = 300K
T2 = 700K
V1 = V2
M1 = M2

i have a chart that relates temperature in Rº to sº (Btu/lbm*R)

what steps do i take to solve this problem???
I am supposed to be able to do it without moles, using instead the imperial formula for ideal gases (pV=mRT i think)

How do i write the conservation of energy for this?

Are equations are needed to solve for pressure here?

What is the Heat Transfer and Work for each process?

http://home.engineering.iastate.edu/~jon...

thank you sooo much for any help!
Update: The initial volume, V1, is equal to the final volume, V2