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 122 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
YES! Correct, THANKS for helping me on my review

komodo7

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Basic energy of a human life Basic energy of a human life
Mechanism of the two-component molybdenum-dependent nitrogenase reaction Mechanism of the two-component molybdenum-dependent nitrogenase reaction
Mechanism for the reaction catalyzed by thymidylate synthase Mechanism for the reaction catalyzed by thymidylate synthase
World Total Energy Consumption by Fuel Type World Total Energy Consumption by Fuel Type
Wind energy Wind energy
Energy Resources: Fossil Fuels Energy Resources: Fossil Fuels
Video: Proteins

For a complete list of videos, visit our video library