This topic contains a solution. Click here to go to the answer

Author Question: The reason that we can calculate the change in entropy of a system is that a. entropy always ... (Read 62 times)

penza

  • Hero Member
  • *****
  • Posts: 1,022
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
Answer to Question 1

D

Answer to Question 2

A




penza

  • Member
  • Posts: 1,022
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it


ricroger

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

For a complete list of videos, visit our video library