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

Author Question: What is the entropy change of 450 g of water when it changes from (a) liquid to steam at its usual ... (Read 78 times)

laurencescou

  • Hero Member
  • *****
  • Posts: 593
on: Jul 29, 2018
What is the entropy change of 450 g of water when it changes from (a) liquid to steam at its usual boiling point and (b) ice to liquid at its usual melting point? For water, LF = 0.334 MJ/kg, LV = 2.26 MJ/kg.
 
  What will be an ideal response?

Question 2

The wavelength of an electromagnetic wave is 600 nm. What is its frequency? (c = 3.0  108 m/s)
 
  A) 200  1012 Hz
  B) 300  1012 Hz
  C) 400  1012 Hz
  D) 500  1012 Hz
  E) 600  1012 Hz


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juwms

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 2.73 kJ/K (b) 549 J/K

Answer to Question 2

D


laurencescou

  • Hero Member
  • *****
  • Posts: 593
Reply #2 on: Jul 29, 2018
Thanks


juwms

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 29, 2018
Welcome :)


« previous next »
 

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Mechanoreceptors in the lateral line system that detect changes in water movement. Mechanoreceptors in the lateral line system that detect changes in water movement.
Hand Washing Using Soap and Water Hand Washing Using Soap and Water
Fossils are formed after an animal dies, decomposes, and is covered in sediment. Minerals in ground Fossils are formed after an animal dies, decomposes, and is covered in sediment. Minerals in ground
Lilly Martin Spenser’s painting, Domestic Happiness (1844), reflects the change in attitudes toward Lilly Martin Spenser’s painting, Domestic Happiness (1844), reflects the change in attitudes toward
A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ... A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ...
Water Molecule Water Molecule
Video: Olfaction. or the sense of smell

For a complete list of videos, visit our video library