[bretard]

Hi guys, I have this question regarding internal energy that I'm stuck on.
 Suppose that 1.00 kJ of energy is transferred as heat to oxygen in a cylinder fitted with a piston; the external
pressure is 2.00 atm. The oxygen expands from 1.00 L to 3.00 L against this constant pressure. Calculate w and DU for
the entire process by treating the O2 as an ideal gas.

Any suggestions or help would be appreciated

[Borek]

You have to show your attempts to receive help, this is a forum policy.

What related equations/laws do you know? Have you tried to apply them?

[m190908m]

1 kj of energy is transferred
1st find work (w) using pressure volume
-(2.0 atm)(3.0L - 2.0L)= -4.0 L*atm
Convert liter atmospheres to joules
-4.0l*atm (101.32J/l*atm)= -405.3J
1kj = 1000 joules
So now we have w
Delta E(or delta U)= +1000 joules + (-405.3 joules)= 594.7J
Change in E= 594.7 joules or .5974 KJ