Homework Help: Chemistry - General

Posted by Sahar on Friday, July 24, 2009 at 6:20pm.

1. Consider a calorimeter into which 135g of water at 45.3 degrees Celsius is added. The initial temperature of the calorimeter was 23.8C and the equilibrium temperature of the water and the calorimeter is 39.6C. Assuming there is no heat loss to the surroundings, what is the heat capacity of the calorimeter in J/C?

Chemistry - General - DrBob222, Friday, July 24, 2009 at 8:33pm
Isn't qH2O + qcalorimeter = 0?
q H2O = mass x specific heat x delta T.
q calor = mass x specific heat x delta T.
note: mass x specific heat calorimeter = calorimeter constant.
q H2O = 135 x 4.184 x (39.5-45.3)
q calorimeter = constant x (23.8-39.6)

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