A block of aluminum with m = 0.5 kg, T = 20oC is dropped into a reservoir

Question:

A block of aluminum with m = 0.5 kg, T = 20oC is dropped into a reservoir at a temperature 90oC. Calculate
(a) The change in stored energy.
(b) The amount of heat transfer.
(c) The change in entropy.
(d) The amount of entropy transfer by heat.
(e) The entropy generation in the system's universe during the heat transfer process.