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

Author Question: A coal-fired plant generates 600 MW of electric power. The plant uses 4.8 106 kg of coal each day. ... (Read 155 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
on: Jul 27, 2018
A coal-fired plant generates 600 MW of electric power. The plant uses 4.8  106 kg of coal each day. The heat of combustion of coal is 3.3  107 J/kg.
 
  The steam that drives the turbines is at a temperature of 300C, and the exhaust water is at 37C.
  (a) What is the overall efficiency of the plant for generating electric power?
  (b) What is the Carnot efficiency?

Question 2

How many moles are there in 2.0 kg of copper? (The atomic weight of copper is 63.5 and its specific gravity is 8.9.)
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

whitcassie

  • Sr. Member
  • ****
  • Posts: 298
Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 33
(b) 46

Answer to Question 2

32. moles


dakota nelson

  • Hero Member
  • *****
  • Posts: 604
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


whitcassie

  • Sr. Member
  • ****
  • Posts: 298
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Acid Rain and Power Plant Emissions Acid Rain and Power Plant Emissions
Electric and butane-powered soldering guns used to make electrical repairs. Soldering guns are sold ... Electric and butane-powered soldering guns used to make electrical repairs. Soldering guns are sold ...
The schematic of a variable valve timing control circuit, showing that battery power (+) is being ... The schematic of a variable valve timing control circuit, showing that battery power (+) is being ...
Plant growth with and without fungus (comparison) Plant growth with and without fungus (comparison)
Shoot meristems in plant growth Shoot meristems in plant growth
Mitosis (A comparison of plant vs. animal cells) Mitosis (A comparison of plant vs. animal cells)
Video: Second Messengers in the Inositol-lipid Signaling Pathway

For a complete list of videos, visit our video library