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 89 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?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Liquid helium Liquid helium
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 ...
Flexible cooling fan blades change shape as the engine speed changes. Flexible cooling fan blades change shape as the engine speed changes.
Climate Change Climate Change
A boiling-liquid, expanding-vapor explosion (BLEVE). The burning propane cylinder on the left is not ... A boiling-liquid, expanding-vapor explosion (BLEVE). The burning propane cylinder on the left is not ...
Storm water charge Storm water charge
Video: Forming urine ( influencing factors), Forming dilute urine & Forming concentrated urine

For a complete list of videos, visit our video library