Systems, physics questions?

Question

A chunk of ice with a mass of 1 kg at 0°C melts and absorbs 3.33 x 10^3 J of heat in the process. Which best describes what happened to this system?

a. Its entropy increased.

b. Its entropy decreased.

c. Its entropy remained constant.

d. Work was converted to energy.

Answer 1

a.

Entropy increases unless work is input into the system. 2nd law of thermodynamics

Answer 2

e.

Answer 3

Entropy is the amount of heat not available to be converted into work. Some heat was given to the ice. Out of which a part was absorbed. This part is not available for work. This means that the part not available for work increased. In other words, entropy increased.

Ans (a)