« previous next »

Author Question: A walnut stuck to a pin is burned beneath a can containing 100.0 grams of water at 21C. After the ... (Read 102 times)

nenivikky

  • Hero Member
  • *****
  • Posts: 516
on: Aug 27, 2018
A walnut stuck to a pin is burned beneath a can containing 100.0 grams of water at 21C. After the walnut has completely burned, the water's final temperature is a warmer 28C. How much heat energy arose from the burning walnut?
 
  A) 3,000 joules
  B) 9,000 joules
  C) 5,000 joules
  D) 2,000 joules

Question 2

What was the first polymeric hydrocarbon extensively utilized for its material properties?
 
  A) rubber
  B) vulcanized-rubber
  C) nylon
  D) nitrocellulose
  E) none of the above


jaaaaaaa

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

nenivikky

  • Hero Member
  • *****
  • Posts: 516
Reply #2 on: Aug 27, 2018
Thanks


jaaaaaaa

  • Sr. Member
  • ****
  • Posts: 341
Reply #3 on: Aug 27, 2018
Welcome :)


« previous next »
 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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.

Plant cell water potential. Plant cell water potential.
The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport. The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport.
Plant-transpired water vapour mist rising from a tropical rain forest. Plant-transpired water vapour mist rising from a tropical rain forest.
Water movement between capillaries and interstitial fluid. Water movement between capillaries and interstitial fluid.
Claude Monet, Water Lilies, Morning: Willows (central section and right side). Claude Monet, Water Lilies, Morning: Willows (central section and right side).
Water Vapor and Liquid Water Water Vapor and Liquid Water
Video: Dissociative Disorders (Part 2)

For a complete list of videos, visit our video library