Question

Use the exact values you enter in previous answer(s) to make later calculation(s).

A block of copper at a temperature of 54°C is placed in contact with a block of aluminum at a temperature of 40°C in an insulated container. As a result of a transfer of 1005 Jof energy from the copper to the aluminum, the final equilibrium temperature of the two blocks is 48°C.

(a) What is the approximate change in the entropy of the aluminum block?
J/K

(b) What is the approximate change in the entropy of the copper block?
J/K

(c) What is the approximate change in the entropy of the Universe?
J/K

(d) What is the change in the energy of the Universe?
J

Answer 1

Answer:

a) 3.210J/K

b) -3.073J/K

c) -3.131J/K

d) O

Explanation:

The relationship between entropy and the energy transferred is applied.

Mathematically, dS = dQ/T

the steps are as shown in the attachment.