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

Author Question: The diagram below shows the radioactive decay of cesium (135Cs). What is the half-life of 135Cs? ... (Read 52 times)

rl

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
The diagram below shows the radioactive decay of cesium (135Cs). What is the half-life of 135Cs?
 
 

Question 2

The diagram below illustrates the radioactive decay of Potassium (40K), which has a half-life of 1.3 billion years. If a lunar rock is found that currently contains 5 grams of 40K, and it is determined that the sample contained 20 grams when it was formed, how old is the lunar rock?
 
 
   
  a.
  6.5 billion years
  b.
  19.5 billion years
  c.
  2.6 billion years
  d.
  3.9 billion years
  e.
  4.6 billion years


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

blazinlyss

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 27, 2018
Answer to Question 1

3 million years

Answer to Question 2

C


rl

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
Gracias!

Hdosisshsbshs

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Diagram of a flagellate stramenopile cell, showing characteristic flagellar hairs. Diagram of a flagellate stramenopile cell, showing characteristic flagellar hairs.
Discovery of nonsense-mediated mRNA decay (NMD). Discovery of nonsense-mediated mRNA decay (NMD).
Success Later in Life Success Later in Life
The inverse-square law and its effects. Doubling your distance away from a radioactive material ... The inverse-square law and its effects. Doubling your distance away from a radioactive material ...
This image shows a normal third-trimester fetal brain This image shows a normal third-trimester fetal brain
The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ... The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ...
Video: Stroke volume

For a complete list of videos, visit our video library