q=c∆T

[505934309]

How do we know when to use q=c∆T vs q=nc∆T? I don't get when we know to include moles or not.

[alexandra]

For q of calorimeters we do not include moles. if calculating q of anything else (including the substance inside the calorimeter) we use q = nCT (or we can use grams).

[Sei Lam 3F]

Hi! I believe q = nc∆T is for molar heat capacity, while q = C∆T is for heat capacity.

[Kaili 3H]

When heat capacity is given in J/g°C we are being given the specific heat capacity and can use the equation q=mcΔT. If you are given units in J/mol°C we are given the molar heat capacity and you should use the equation q=nCΔT. Based on what units you are given, you can use the appropriate equation.