Formula for heat

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Chu 3J
Posts: 19
Joined: Fri Sep 25, 2015 3:00 am

Formula for heat

Postby Chu 3J » Sun Feb 07, 2016 9:51 pm

Why is q=nC (delta)t sometimes written as q=C (delta)t?

Peiliang Zhou 3K
Posts: 21
Joined: Fri Sep 25, 2015 3:00 am

Re: Formula for heat

Postby Peiliang Zhou 3K » Sun Feb 07, 2016 10:17 pm

q=nC (delta)t is for situations where the molar heat capacity is used, so that the mol in Cm=J/K/mol can be cancelled, and the K is cancelled out by the delta T. Similarly, q=mC (delta)t is used for specific heat capacity (where Cs=kJ/oC/g).

q=C (delta)t is used when only the heat capacity (C=kJ/K, or C=kJ/oC) is given.

Hope this helps!


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