Pistons

[KABLE]

A piston expands against 1.00atm of pressure, from 11.2L to 29.1L. This is done without any transfer of heat.

• a) calculate the change in energy of the system
• b) calculate the change in energy for the above change, and in addition, the system absorbs 1,037J of heat from its surroundings

ME AYUDA POR FAVOR.

Just kidding! I figured it out. If anybody needs it:

part 1)
ΔE = -PΔV
ΔE = -1atm(29.1L - 11.2L)
ΔE = -17.9 Liters(atm)
-17.9 Liters(atm) x 101.3 Liters(atm) / 1J = 1.813kJ

part 2)
1.813kJ + 1.037kJ = 2.85kJ