« previous next »

Author Question: Calculate the amount of heat required to change 5 lb of 32F ice to water. A) No extra heat is ... (Read 71 times)

madam-professor

  • Hero Member
  • *****
  • Posts: 584
on: Jul 24, 2018
Calculate the amount of heat required to change 5 lb of 32F ice to water.
 
  A) No extra heat is required because the ice is already at the melting temperature.
  B) 5 lb  32F  0.5 BTU/lb = 80 BTU
  C) The amount of heat required cannot be calculated without knowing the ending temperature of the water.
  D) 5 lb  144 BTU/lb = 720 BTU

Question 2

What is the head pressure of a tank 10 ft in height?
 
  A) 43.3 psi B) 433 psi C) 0.433 psi D) 4.33 psi


ktidd

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Amount of Energy Released by Earthquakes of Different Magnitudes Amount of Energy Released by Earthquakes of Different Magnitudes
Change Women’s Roles Change Women’s Roles
Cumulative change for six personality-trait domains across the life course show distinct patterns. Cumulative change for six personality-trait domains across the life course show distinct patterns.
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 ...
Check heat source for temperature. Evaluate the amount of heat given off from the source using your ... Check heat source for temperature. Evaluate the amount of heat given off from the source using your ...
The change in the net of an irradiance, in Wm-2, at the tropopause The change in the net of an irradiance, in Wm-2, at the tropopause
Video: Osmosis - Isotonic, Hypotonic, and Hypertonic​ Solutions

For a complete list of videos, visit our video library