for number 3,4,5 i'm still trying
PV/T = PV/T
q = ΔU + W
W = P ΔV
The Attempt at a Solution
(3) I used PV/T = PV/T to find the ΔT for each process
for A→B I find PV/TA = P3V/TB ----- TB = 3TA (T increase)
for B→C I find P3V/TB = 4P3V/TC -----...