## Homework Help

$\Delta U=q+w$

Vincent Leong 2B
Posts: 207
Joined: Fri Aug 09, 2019 12:15 am

### Homework Help

4C/3 :
Calculate the final temperature and the change in enthalpy when 765 J of energy is transferred as heat to 0.820 mol Kr(g) at 298 K and 1.00 atm
(a) at constant pressure; (b) at constant volume. Treat the gas as ideal.

I don't understand this question at all. If anyone could it explain it through concepts and equations, that would be greatly appreciated.

Kate Osborne 1H
Posts: 102
Joined: Fri Aug 30, 2019 12:16 am

### Re: Homework Help

to solve this question you use the given equation: q=nC ΔT
you are directly given q, n, and the initial temperature and must use the equations: ideal gas, Cp=(5/2)R and Cv=(3/2)R to find C for parts a and b to find final temperature

hope this helps!