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

Author Question: A sample of wood from an Egyptian mummy case gives a count of 7.0 cpm/gC (counts per minute per gram ... (Read 59 times)

jasdeep_brar

  • Hero Member
  • *****
  • Posts: 569
on: Mar 21, 2021

Question 1

A radioactive sample has an initial activity of 2.00 × 106 cpm (counts per minute), and after 4.0 days, its activity is 9.0 × 105 cpm. What is its activity after 31 days?

◦ 8.3 cpm
◦ 4.1 × 103 cpm
◦ 4.9 × 102 cpm
◦ 1.0 × 10–9 cpm
◦ None of these are correct.

Question 2

A sample of wood from an Egyptian mummy case gives a count of 7.0 cpm/gC (counts per minute per gram of carbon). How old is the wood? (The initial decay rate of is 15.3 cpm/g C, and its half-life is 5730 years.)

◦ 3233 yr
◦ 8965 yr
◦ 6465 yr
◦ 7515 yr
◦ None of these are correct.
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by jasdeep_brar on Mar 21, 2021

owenfalvey

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Mar 21, 2021
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


jasdeep_brar

  • Member
  • Posts: 569
Reply 2 on: Mar 21, 2021
:D TYSM

helenmarkerine

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Wow, this really help

« 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?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

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

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Massive amounts of wood are stored on the forest floor of old-growth temperate coniferous forests of Massive amounts of wood are stored on the forest floor of old-growth temperate coniferous forests of
Sample communication analysis Sample communication analysis
A block of wood should be used to avoid the possibility of doing damage to components supported by ... A block of wood should be used to avoid the possibility of doing damage to components supported by ...
Performance of a delayed nonmatching-to-sample trial. Performance of a delayed nonmatching-to-sample trial.
Sample time management planning chart for a massage student. Sample time management planning chart for a massage student.
(left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur (left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur
Video: Introduction to Sickle Cell Anemia

For a complete list of videos, visit our video library