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

Author Question: A geological sample is found to have a Pb-206/U-238 mass ratio of 0.337/1.00. Assuming there was no ... (Read 96 times)

james0929

  • Hero Member
  • *****
  • Posts: 586
on: Nov 18, 2019

Question 1

Determine the half-life of a nuclide that loses 38.0% of its mass in 387 hours.
◦ 748 hours
◦ 277 hours
◦ 639 hours
◦ 561 hours
◦ 455 hour

Question 2

A geological sample is found to have a Pb-206/U-238 mass ratio of 0.337/1.00. Assuming there was no Pb-206 present when the sample was formed, how old is it? The half-life of U-238 is 4.5 × 109 years.
◦ 1.4 × 1010 years
◦ 2.4 × 1010 years
◦ 7.1 × 109 years
◦ 2.1 × 109 years
◦ 7.3 × 1011 years
Chemistry: A Molecular Approach (Canadian) ¦ Tro, Fridgen, Shaw ¦ 2nd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by james0929 on Nov 18, 2019

lou

  • Sr. Member
  • ****
  • Posts: 286
Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


james0929

  • Member
  • Posts: 586
Reply 2 on: Nov 18, 2019
Great answer, keep it coming :)

dawsa925

  • Member
  • Posts: 326
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

The most abundant elements found in living organisms The most abundant elements found in living organisms
Sample new patient registration form. Sample new patient registration form.
Geological Hazards Geological Hazards
Sample prescriptions of antibiotics for prophylaxis against infective endocarditis. Sample prescriptions of antibiotics for prophylaxis against infective endocarditis.
Types of supercoiling found in chromosomes Types of supercoiling found in chromosomes
Ratio of College Wages to High-School Wages Ratio of College Wages to High-School Wages
Video: Causes of Angina

For a complete list of videos, visit our video library