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 13 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
Great answer, keep it coming :)

scikid

  • Member
  • Posts: 300
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

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?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Seven characteristics are common to all life Seven characteristics are common to all life
The heme group viewed from the side. This view shows the two coordination bonds to Fe2+ The heme group viewed from the side. This view shows the two coordination bonds to Fe2+
The “Old Man” from La Chapelle shows evidence of extensive tooth loss and bone resorption. The “Old Man” from La Chapelle shows evidence of extensive tooth loss and bone resorption.
Cumulative change for six personality-trait domains across the life course show distinct patterns. Cumulative change for six personality-trait domains across the life course show distinct patterns.
The posted octane rating in most high-altitude areas shows regular at 85 instead of the usual 87. The posted octane rating in most high-altitude areas shows regular at 85 instead of the usual 87.
Life cycle of bacteriophage T4 Life cycle of bacteriophage T4
Video: Lactation and Breast Feeding

For a complete list of videos, visit our video library