« previous next »

Author Question: Name the first three isotopes of hydrogen and their nuclide symbols, and indicate which is most ... (Read 73 times)

Diane

  • Hero Member
  • *****
  • Posts: 576
on: Jul 27, 2018
Name the first three isotopes of hydrogen and their nuclide symbols, and indicate which is most common and which is most unstable.
 
  What will be an ideal response?

Question 2

If a nuclide has a decay constant of 0.765  10-6 s-1 and contains 3.0  1017 nuclei
 
  (a) what is the half life?
  (b) what is its initial activity?
  (c) what is the activity after 12. days?


meltdown117

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 27, 2018
Answer to Question 1

ordinary hydrogen 1H , deuterium 2H , and tritium 3H ; 1H being most common and 3H most unstable decaying with a 12. year half life.

Answer to Question 2

(a) 9.06  105 s
(b) 2.3  1011 decays/s
(c) 1.0  1011 decays/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Examples of hydrogen bonds and DNA Examples of hydrogen bonds and DNA
Lewis symbols,(Figure 1) Lewis symbols,(Figure 1)
Spectrum of Hydrogen Gas Spectrum of Hydrogen Gas
A taxonomy of primate social systems. Larger symbols indicate adults. A taxonomy of primate social systems. Larger symbols indicate adults.
Common Abbreviations and Symbols Used by Massage Therapists Cont Common Abbreviations and Symbols Used by Massage Therapists Cont
Common Abbreviations and Symbols Used by Massage Therapists Cont Common Abbreviations and Symbols Used by Massage Therapists Cont
Video: Multiple Sclerosis Animation

For a complete list of videos, visit our video library