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

Author Question: 100 grams of liquid nitrogen at 77 K is stirred into a beaker containing 200 grams of 5C water. If ... (Read 139 times)

danielfitts88

  • Hero Member
  • *****
  • Posts: 535
on: Jul 28, 2018
100 grams of liquid nitrogen at 77 K is stirred into a beaker containing 200 grams of 5C water. If the nitrogen leaves the solution as soon as it turns to gas, how much water freezes? (The heat of evaporation of nitrogen is 6.09 cal/gram and the heat of fusion of water is 80 cal/gram.)

Question 2

In braking an automobile, the friction between the brake drums and brake shoes converts the car's kinetic energy into heat. If a 1 500-kg automobile traveling at 30 m/s brakes to a halt, how much does the temperature rise in each of the four 8.0-kg brake drums? (The specific heat of each iron brake drum is 448 J/kgC).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dreamfighter72

  • Sr. Member
  • ****
  • Posts: 355
Reply #1 on: Jul 28, 2018
Answer to Question 1

none

Answer to Question 2

47C


danielfitts88

  • Member
  • Posts: 535
Reply 2 on: Jul 28, 2018
Excellent

Jossy

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

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

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Large water tank, possibly a public or ritual bathing area, from Mohenjo-daro, Indus Valley ... Large water tank, possibly a public or ritual bathing area, from Mohenjo-daro, Indus Valley ...
Daily Water Balance in the Body Daily Water Balance in the Body
How water is used in homes How water is used in homes
Shallow-water systems are highly productive Shallow-water systems are highly productive
Water-Soluble Vitamins Act as Coenzymes in Metabolic Processes Water-Soluble Vitamins Act as Coenzymes in Metabolic Processes
Planet Earth compared to all its water and air! Planet Earth compared to all its water and air!
Video: Arthroscopy

For a complete list of videos, visit our video library