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 47 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 :)

bimper21

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Elastic fibres are made of elastin, one type of structural protein found in the ECM of animal cells Elastic fibres are made of elastin, one type of structural protein found in the ECM of animal cells
Brain mass as a function of body mass in mammals. Brain mass as a function of body mass in mammals.
Sample Advance Directive Cont. Sample Advance Directive Cont.
Sample One-Day Menu Sample One-Day Menu
Finding the angle from a ratio (Part 1) Finding the angle from a ratio (Part 1)
What is the mass of 1.20 x 1024 molecules of sulfur dioxide, SO2? What is the mass of 1.20 x 1024 molecules of sulfur dioxide, SO2?
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library