A system contracts from an initial volume of 15.0 L to a final volume of 10.0 L under a constant external pres

Question

A system contracts from an initial volume of 15.0 L to a final volume of 10.0 L under a constant external pressure of 0.800 atm. The value of w, in J, is

Answer 1

1 atm can also be stated as:
1atm
≡1.013 25 bar
≡101.325 kPa
≡760 torr [B]
≈760.001 mm-Hg
≈1.033 227 452 799 886 kgf/cm²
Hence w = P(V2-v1) = 0.800atm*5.0L
= (0.800atm)*(1.033*9.80N/cm²atm)*(50m*cm^2)
= 0.405 kJ