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Specific Heat capacity

Posted: Wed Jan 17, 2018 10:08 am
by Michelle Chernyak 1J
When there are two substances present in a calorimeter or the calorimeter is made up of a certain material, how do we know which specific heat capacity to use?

Re: Specific Heat capacity

Posted: Wed Jan 17, 2018 10:15 am
by Deap Bhandal L1 S1J
Normally the calorimeter is not included in the equations and is assumed that it does not loose heat, but it could be in certain cases. However each of the heat constants have units attached to them. If you are using q=mCdeltaT, make sure the c you choose has mass, energy, and a unit of temperature in the units. Also make sure you use the corresponding units for the other variables in the equation.

Re: Specific Heat capacity

Posted: Wed Jan 17, 2018 4:53 pm
by Michelle Nguyen 2L
Usually in problems where the presence of the calorimeter is taken into consideration, the problem will provide you with the heat capacity for the calorimeter, and not the specific heat capacity. This is actually easier as the equation you have to solve then becomes q= -(heat capacity of calorimeter)x(change in temperature of surroundings/calorimeter)