The refrigerator in a kitchen receives an electrical input power of 145 W to drive the system, and it rejects 400 W to the kitchen air. Find the COP (Coefficient of Performance) of the refrigerator. (1 pts)

8. Identify products A through E in the reaction scheme below. (10 pts)  

What common condition is known as epistaxis?

The constant-pressure process needs less heat than the constant-volume process for the same amount of substance to increase the temperature by one degree. True or False? (1 pts)

An ideal (Carnot) heat engine has an efficiency of 40%. If the high temperature is raised by 20%, what is the new efficiency while keeping the same low temperature? (1 pts)

Express the sum or difference as a product of sines and/or cosines. Show all work. (4 pts)cos(9θ) – cos(5θ)

A heat engine receives 7 kW from a 300∘C source and rejects heat at 60∘C. If the output power is 5 kW, examine it with respect to the inequality of Clausius. (1 pts)

Convert the angle in degrees to radians. Express the answer as multiple of π.  (2 pts each)a.  -54° b.  440°

Facial lacerations are associated with heavy bleeding and often require sutures (stitches) to the injury site.

2. When the following compound is treated with Br2 and a Lewis acid, one product predominates. Predict the structure of the major product.  (7 pts)