How much energy did the heating require

Question

Problem

1. In a sink, 5 L of water at 70^oC is combined with 1 kg of aluminum pots, 1 kg of silverware (steel), and 1 kg of glass, all put in at 20^oC. What is the final uniform temperature, neglecting any heat loss and work?

2. A computer CPU chip consists of 50 g silicon, 20 g copper, and 50 g polyvinyl chloride (plastic). It now heats from 15^oC to 70^oC as the computer is turned on. How much energy did the heating require?

The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.