Question

A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Two metallic blocks are placed in the water. One is a 50 g piece of copper at 79°C. The other sample has a mass of 83 g and is originally at a temperature of 100°C. The entire system stabilizes at a final temperature of 20°C. Determine the specific heat of the unknown second sample.


I know the equation is Q = Q for this but when i set it up and put the answer in, it says i am 10% from the right answer.

In my equation i ignored the mass and specific of thealuminum calorimeter.

so am I supposed to include that into my equation?

if so..how?

Answer 1

yes, add the calorimeter. It has a mass of 100 g, specific heat of aluminum intitial temp of 10C, final temp is 20C.

Answer 2

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