## Heat Capacity Value

$\Delta U=q+w$

K Stefanescu 2I
Posts: 68
Joined: Fri Sep 29, 2017 7:04 am

### Heat Capacity Value

Why is the heat capacity for a monoatomic gas at constant volume C=(3/2)R? How was this derived?

Emily Duggan 1F
Posts: 42
Joined: Fri Sep 29, 2017 7:07 am

### Re: Heat Capacity Value

I think that equation is averaged by the real values for heat capacity of monatomic ideal gases (ex: Helium, Argon, Neon, etc).

mayasinha1B
Posts: 70
Joined: Fri Sep 29, 2017 7:04 am

### Re: Heat Capacity Value

Yes this equation is only used for ideal gases and calculated using properties of ideal gases.