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 57 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?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Water on Mars! Water on Mars!
Waterspouts are tornadoes that occur over warm-water bodies, instead of over land. Waterspouts are tornadoes that occur over warm-water bodies, instead of over land.
Preserve Your Vitamins! Cook your vegetables in a small amount of water Preserve Your Vitamins! Cook your vegetables in a small amount of water
A Well of Sources for Bottled Water A Well of Sources for Bottled Water
Root uptake of soil water Root uptake of soil water
Table salt (NaCl) molecules dissolving in water, resulting in Na+ and Cl– ions surrounded by ... Table salt (NaCl) molecules dissolving in water, resulting in Na+ and Cl– ions surrounded by ...
Video: Ionic bonds - role of ions in the body

For a complete list of videos, visit our video library