« 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 103 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?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

The Pathways of Water and Solutes in a Plant. The Pathways of Water and Solutes in a Plant.
Water (Its Volume Expansion Upon Freezing) Water (Its Volume Expansion Upon Freezing)
The movement of water vapor molecules exerts vapor pressure on surfaces. The movement of water vapor molecules exerts vapor pressure on surfaces.
A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water. A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water.
A solution of CsF in water has XCsF = 0.0700. What is the molality? A solution of CsF in water has XCsF = 0.0700. What is the molality?
Root uptake of soil water Root uptake of soil water
Video: Fermentation pathways

For a complete list of videos, visit our video library