Question

1) A 4.82g sample of iron is heated to 84.3 degrees C. A 1.25gsample of gold is heated to 95.1 degrees C. Both of these metalsare added to 9.47g of cold water that is initially at 14.5 degreesC.

a) From the first law of thermodynamics, what is the equationrelating the sum of the heats of the 2 components?

b) Algebraically substitute in the specific heat capacities for themetals and water, the masses of the samples, and the tempchange.

c) Solve the algebraic problem in (b) for Tf, the final temp ofwater.

d)Determine the final temp of the metals in water. [Hint: It's thesame for all 3 components]