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

Author Question: If the Q value of an endothermic reaction is 2.17 MeV, then the minimum kinetic energy needed in the ... (Read 58 times)

erika

  • Hero Member
  • *****
  • Posts: 522
on: Jul 28, 2018
If the Q value of an endothermic reaction is 2.17 MeV, then the minimum kinetic energy needed in the reactant nuclei if the reaction is to occur must be
  1.equal to 2.17 MeV.
  2.greater than 2.17 MeV.
  3.less than 2.17 MeV.
  4.exactly half of 2.17 MeV.

Question 2

Suppose the decay constant of radioactive substance A is twice the decay constant of radioactive substance B. If substance B has a half-life of 4 h, what's the half-life of substance A?
  1.8 h
  2.4 h
  3.2 h


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lauravaras

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 28, 2018
Answer to Question 1

2

Answer to Question 2

3


erika

  • Member
  • Posts: 522
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

fatboyy09

  • Member
  • Posts: 358
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

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 training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Environmental Energy Flow Environmental Energy Flow
a) Type IV hypersensitivity reaction, contact dermatitis as the result of reaction to the nickel in ... a) Type IV hypersensitivity reaction, contact dermatitis as the result of reaction to the nickel in ...
Extension of telomeric DNA by telomerase: The overall reaction Extension of telomeric DNA by telomerase: The overall reaction
The Visible Spectrum of Electromagnetic Energy The Visible Spectrum of Electromagnetic Energy
The flow of energy and the cycling of materials maintain nature’s organization The flow of energy and the cycling of materials maintain nature’s organization
ATP, an important energy currency in cells ATP, an important energy currency in cells
Video: Sister chromatids of a metaphase chromosome animation

For a complete list of videos, visit our video library