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

Author Question: A pure sample of 226Ra contains 2.0 1014 atoms of the isotope. If the half-life of 226Ra = 1.6 103 ... (Read 220 times)

LaDunn

  • Hero Member
  • *****
  • Posts: 526
on: Jul 28, 2018
A pure sample of 226Ra contains 2.0  1014 atoms of the isotope. If the half-life of 226Ra = 1.6  103 years, what is the decay rate of this sample? (1 Ci = 3.7  1010 decays/s)

Question 2

How much kinetic energy must a deuterium ion (charge 1.6  10-19 C) have to approach to within 10-14 m of another deuterium ion? (1 MeV = 1.6  10-13 J)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

emsimon14

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 28, 2018
Answer to Question 1

7.4  10-8 Ci

Answer to Question 2

140 keV


LaDunn

  • Hero Member
  • *****
  • Posts: 526
Reply #2 on: Jul 28, 2018
TY


emsimon14

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa
Sample communication analysis Sample communication analysis
Sample Advance Directive Sample Advance Directive
The chemical structure of the water molecule facilitates life The chemical structure of the water molecule facilitates life
Psychology and Life Psychology and Life
Life cycle of a club fungus having two mating strains of hyphae Life cycle of a club fungus having two mating strains of hyphae
Video: Interview with Person having Obsessive Compulsive Disorder

For a complete list of videos, visit our video library