Question

Question

In an experiment a gas was found to obey the following equation of state:

(P + 10^3)V = 2.5 x 10^4 J

Find the work done when the gas expands from 1 m3 to 3 m3.

_______

the answer is suppose to be

2.55 x 104J

____________ what i did so far

2 ways i approached this question...first way was the use V as 2 (that is Vf- Vi) and solve for P

Then i plug in equation

W = p delta V

got 2.7 X 10^4

____________ nxt way

i found the values of p using V as 1 and 3

Then, i found the work for each of the pressure i calculated, then added...got like 3.8 x 10^4

i'm baffled

Answer 1

already answered. See you followup post of the same question.