This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A Carnot refrigerator takes heat from water at 0C and rejects heat to a room at 12C. Suppose that ... (Read 31 times)

burchfield96

  • Hero Member
  • *****
  • Posts: 610
on: Jul 29, 2018
A Carnot refrigerator takes heat from water at 0C and rejects heat to a room at 12C. Suppose that 92.0 grams of water at 0C are converted to ice at 0C by the refrigerator.
 
  Calculate the mechanical energy that must be supplied to the refrigerator. The heat of fusion of water is 3.34  105 J/kg.

Question 2

An ideal Carnot engine operates between reservoirs having temperatures of 125C and -20C. Each cycle the heat expelled by this engine is used to melt 30.0 g of ice at 0.00C.
 
  The heat of fusion of water is 3.34  105 J/kg and the heat of vaporization of water is 2.25  106 J/kg.
  (a) How much work does this engine do each cycle?
  (b) How much heat per cycle does this engine absorb at the hot reservoir?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Pariscourtney

  • Sr. Member
  • ****
  • Posts: 352
Reply #1 on: Jul 29, 2018
Answer to Question 1

1350 J

Answer to Question 2

(a) 5740 J (b) 15,800 J


burchfield96

  • Member
  • Posts: 610
Reply 2 on: Jul 29, 2018
:D TYSM

tranoy

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

A typical office file room. (Paper medical records are rapidly being replaced by electronic ... A typical office file room. (Paper medical records are rapidly being replaced by electronic ...
Concentric double-pipe heat exchanger for counter-current flow Concentric double-pipe heat exchanger for counter-current flow
Co-current flow in a concentric tube heat exchanger Co-current flow in a concentric tube heat exchanger
A container with gasoline containing alcohol. Notice the separation line where the alcohol-water ... A container with gasoline containing alcohol. Notice the separation line where the alcohol-water ...
Glacial deposits overlain by marine carbonates formed in very warm water Glacial deposits overlain by marine carbonates formed in very warm water
Elephant (Loxodonta africana) herd drinking at water hole. Etosha National Park, Namibia. Elephant (Loxodonta africana) herd drinking at water hole. Etosha National Park, Namibia.
Video: Gas exchange - driving force

For a complete list of videos, visit our video library