Question

A 35.0-g piece of copper wire is heated, and the temperature of the wire changes from 29.0°C to 76.0C. The amount of heat absorbed is 243 cal. What is the specific heat of copper? You must show your work to receive credit. (3 points)

Answer 1

Answer:

0.15cal/g°C

Explanation:

Given parameters:

Mass of copper piece = 35g

Initial temperature = 29°C

Final temperature  = 76°C

Amount of heat absorbed  = 243cal

Unknown:

Specific heat of copper = ?

Solution:

The specific heat is the amount of heat supplied to a unit mass of substance that causes a 1°C rise in temperature.

   Specific heat C, = $\frac{H}{m(T_{2} - T_{1} )}$

where H is the amount of heat supplied

           m is the mass of the copper

           T is the temperature

Input the parameters;

             C = $\frac{243}{35(76 - 29)}$   = 0.15cal/g°C