This topic contains a solution. Click here to go to the answer

Author Question: A rock contains 0.313 mg of lead-206 for each milligram of uranium-238. The for the decay of ... (Read 139 times)

future617RT

  • Hero Member
  • *****
  • Posts: 543

Question 1

A nuclide has a decay constant of 4.28 × 10-4/h. If the activity of a sample is 3.14 × 105/s, how many atoms of the nuclide are present in the sample?
◦ 7.34 × 108
◦ 2.64 × 1012
◦ 4.84 × 105
◦ 1.34 × 102
◦ 2.34 × 1011

Question 2

A rock contains 0.313 mg of lead-206 for each milligram of uranium-238. The for the decay of uranium-238 to lead-206 is 4.5 × 109 y. The rock was formed ________ y. ago.
◦ 1.41 × 109
◦ 1.08 × 109
◦ 1.39 × 109
◦ 2.00 × 109
◦ 1.56 × 109


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by future617RT on Jul 8, 2021

fffftttt

  • Sr. Member
  • ****
  • Posts: 322
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




future617RT

  • Member
  • Posts: 543
Reply 2 on: Jul 8, 2021
YES! Correct, THANKS for helping me on my review


chereeb

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

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

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

For a complete list of videos, visit our video library