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

Author Question: Charcoal found under a stone at Stonehenge, England, has a carbon-14 activity that is 0.60 that of ... (Read 30 times)

desireelg_7

  • Full Member
  • ***
  • Posts: 146
on: Nov 5, 2023

Question 1

Carbon-11 is a radioactive isotope of carbon.  Its half-life is 20.3 minutes.  What fraction of the initial number of carbon-11 atoms in a sample will remain after 81 minutes?
◦ 1/16
◦ 1/4
◦ 1/2
◦ 1/32
◦ 1/8

Question 2

Charcoal found under a stone at Stonehenge, England, has a carbon-14 activity that is 0.60 that of new wood. How old is the charcoal? (The half-life of carbon-14 is 5,730 years.)
◦ Less than 5,730 yr
◦ Between 5,730 and 11,460 yr
◦ Between 11,460 and 17,190 yr
◦ More than 17,190 yr
Chemistry ¦ Chang, Goldsby ¦ 11th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by desireelg_7 on Nov 5, 2023

gyvette

  • Full Member
  • ***
  • Posts: 196
Reply #1 on: Nov 5, 2023
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 35% of students answer this correctly


desireelg_7

  • Member
  • Posts: 146
Reply 2 on: Nov 5, 2023
Thanks for the timely response, appreciate it

tanna.moeller

  • Member
  • Posts: 328
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Red squirrel at a feeding tray in the Lake District, England. Red squirrel at a feeding tray in the Lake District, England.
Wombat scat, found near Cradle Mountain in Tasmania Wombat scat, found near Cradle Mountain in Tasmania
The cortex, hypothalamus, amygdala, and ventral striatum: their putative roles in sexual activity. ... The cortex, hypothalamus, amygdala, and ventral striatum: their putative roles in sexual activity. ...
Summary of Cytokine Activity Summary of Cytokine Activity
Carbon dioxide (~390ppm) Carbon dioxide (~390ppm)
Shallow Hal Soundtrack 07 Baby, Now That I've Found You - The Foundations Shallow Hal Soundtrack 07 Baby, Now That I've Found You - The Foundations
Video: Conjunctivitis

For a complete list of videos, visit our video library