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

Author Question: The reason that we can calculate the change in entropy of a system is that a. entropy always ... (Read 115 times)

penza

  • Hero Member
  • *****
  • Posts: 1,022
on: Jul 28, 2018
The reason that we can calculate the change in entropy of a system is that
 a. entropy always decreases.
  b. entropy always increases.
  c. the entropy of the universe always remains constant.
  d. it depends only on the properties of the initial and final equilibrium states.
  e. systems always follow reversible paths.

Question 2

100 grams of molten lead (600C) is used to make musket balls. If the lead shot is allowed to cool to room temperature (21C), what is the change in entropy (in J/K) of the lead? (For the specific heat of molten and solid lead use 1.29 J/gC; the latent heat of fusion and the melting point of lead are 2.45  104 J/kg and 327C.)
 a. -145
  b. -252
  c. -302
  d. -429
  e. -100


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

recede

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


penza

  • Member
  • Posts: 1,022
Reply 2 on: Jul 28, 2018
:D TYSM

diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Thyroid conditions may make getting pregnant impossible.

The endocrine glands of the endocrine system are distributed throughout the body. The endocrine glands of the endocrine system are distributed throughout the body.
Outline of the System That Controls Drinking Outline of the System That Controls Drinking
Procedures and Diagnostic Tests Related to the Female Reproductive System Procedures and Diagnostic Tests Related to the Female Reproductive System
The Female Reproductive System (1 of 2) The Female Reproductive System (1 of 2)
Female Reproductive System "الجهاز التناسلي للأنثى" Female Reproductive System "الجهاز التناسلي للأنثى"
Calculate the magnitude and direction of the resultant for Calculate the magnitude and direction of the resultant for
Video: Structures that affect circulation - arterioles and vasomotor responses

For a complete list of videos, visit our video library