This topic contains a solution. Click here to go to the answer

Author Question: When a sample of water at 0.0C is cooled to 36.0C and freezes in the process, 935,000 kJ of heat is ... (Read 134 times)

debasdf

  • Hero Member
  • *****
  • Posts: 570
When a sample of water at 0.0C is cooled to 36.0C and freezes in the process, 935,000 kJ of heat is liberated.
 
  What is the mass of this sample of water? For water LF = 334,000 J/kg, LV = 2.256  106 J/kg, and the specific heat of ice is 2050 J/kg  C.
  A) 2290 kg
  B) 1145 kg
  C) 2800 kg
  D) 12,700 kg

Question 2

A real (non-Carnot) heat engine, operating between heat reservoirs at temperatures of 450 K and 270 K, performs 3.3 kJ of net work, and rejects 8.2 kJ of heat in a single cycle.
 
  (a) What is the thermal efficiency of this heat engine?
  (b) What is the maximum efficiency it could possibly have?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

scikid

  • Sr. Member
  • ****
  • Posts: 300
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 39% of students answer this correctly




debasdf

  • Member
  • Posts: 570
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review


ryansturges

  • Member
  • Posts: 338
Reply 3 on: Yesterday
Excellent

 

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

For a complete list of videos, visit our video library