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

Author Question: Potassium-40 decays to argon-40 with a half-life of 1.27 109 yr. The age of a mineral sample that ... (Read 91 times)

formula1

  • Hero Member
  • *****
  • Posts: 666

Question 1

Phosphorus-32 has a half-life of 14.3 days. How many grams remain from a 10.0 gram sample after 30.0 days?
◦ 2.34 g
◦ 7.18 g
◦ 4.64 g
◦ 0.340 g
◦ 3.59 g

Question 2

Potassium-40 decays to argon-40 with a half-life of 1.27 × 109 yr. The age of a mineral sample that has a mass ratio of 40Ar to 40K of 0.812 is ________ y.
◦ 1.56 × 109
◦ 1.02 × 109
◦ 1.47 × 109
◦ 7.55 × 108
◦ 1.09 × 109


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by formula1 on Jul 8, 2021

bigsis44

  • Sr. Member
  • ****
  • Posts: 317
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 58% of students answer this correctly




formula1

  • Member
  • Posts: 666
Reply 2 on: Jul 8, 2021
Thanks for the timely response, appreciate it


Zebsrer

  • Member
  • Posts: 284
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

For a complete list of videos, visit our video library