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

Author Question: What percentage of the known naturally occurring isotopes is radioactive? What will be an ideal ... (Read 26 times)

karen

  • Hero Member
  • *****
  • Posts: 537
on: Jul 16, 2018
What percentage of the known naturally occurring isotopes is radioactive?
 
  What will be an ideal response?

Question 2

You need to know the age of a rock collected during a field research project. How do you select which radioactive dating method to use?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akpaschal

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 16, 2018
Answer to Question 1

70/339  100 = 20.6

Answer to Question 2

First, the method I choose depends on the radioactive elements that could be present in the rock. So, I need to identify the minerals in the rock and then, knowing the composition of the minerals, decide which method is appropriate. Second, I need to make some guess of the age of the rock so that I use a method with an appropriate half life for dating rocks of this age. Table 7.1 provides information on minerals that I can date and the age range of application of each method.


karen

  • Member
  • Posts: 537
Reply 2 on: Jul 16, 2018
Excellent

ghepp

  • Member
  • Posts: 361
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Model for the events occurring around a single replication fork Model for the events occurring around a single replication fork
world percentage of religion world percentage of religion
Cultural leveling is occurring rapidly, with some strange twists. These men from an Amazon tribe, ... Cultural leveling is occurring rapidly, with some strange twists. These men from an Amazon tribe, ...
Stable isotopes of carbon Stable isotopes of carbon
Types of Radioactive Decay Types of Radioactive Decay
Percentage of Full Tryptophan Expression for trpR+ and trpR- Strains Percentage of Full Tryptophan Expression for trpR+ and trpR- Strains
Video: Regulation of GFR: autoregulation via tubuloglomerular feedback, neural & hormonal regulation

For a complete list of videos, visit our video library