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

Author Question: Iron-59 has a half-life of 44 days. A radioactive sample has an activity of 0.64 mBq. What is the ... (Read 28 times)

roselinechinyere27m

  • Hero Member
  • *****
  • Posts: 557
on: Jun 7, 2021

Question 1

Krypton-79 has a half-life of 35 h. How many half-lives have passed after 105 h?
◦ 1 half-life
◦ 2 half-lives
◦ 3 half-lives
◦ 4 half-lives
◦ 5 half-lives

Question 2

Iron-59 has a half-life of 44 days. A radioactive sample has an activity of 0.64 mBq.  What is the activity of the sample after 88 days?
◦ 0.32 mBq
◦ 0.16 mBq
◦ 0.64 mBq
◦ 1.28 mBq
◦ 0080 mBq
Chemistry: An Introduction to General, Organic, and Biological Chemistry ¦ Timberlake ¦ 13th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by roselinechinyere27m on Jun 7, 2021

Carissamariew

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jun 7, 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 56% of students answer this correctly


roselinechinyere27m

  • Member
  • Posts: 557
Reply 2 on: Jun 7, 2021
YES! Correct, THANKS for helping me on my review

ktidd

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

(a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu (a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu
Life on Earth Life on Earth
Cell division in common life cycles Cell division in common life cycles
Truth of life Truth of life
Classical-Conditioning Activity Classical-Conditioning Activity
Complete Life cycle of cherry (Prunus), a eudicot Complete Life cycle of cherry (Prunus), a eudicot
Video: Introduction to Epilepsy

For a complete list of videos, visit our video library