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 81 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
Gracias!

Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

2-1b Structure of the water molecule 2-1b Structure of the water molecule
Ripples in Water Ripples in Water
Relationship between inorganic and organic nitrogen metabolism Relationship between inorganic and organic nitrogen metabolism
Predators adapt to extreme water pressure and the absence of light Predators adapt to extreme water pressure and the absence of light
Fogel’s Map of a Potential Water Transport Network for 1890 Fogel’s Map of a Potential Water Transport Network for 1890
A solution is 2.25% by weight NaHCO3. How many grams of NaHCO3 are in 250.0 g of solution? A solution is 2.25% by weight NaHCO3. How many grams of NaHCO3 are in 250.0 g of solution?
Video: Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library