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 79 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
Wow, this really help

rleezy04

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

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

Cellular basis of life. Cellular basis of life.
Determine the mass percent of Fe3+ in a 0.546g sample of iron ore, if 22.40 mL of a 0.1000 M ... Determine the mass percent of Fe3+ in a 0.546g sample of iron ore, if 22.40 mL of a 0.1000 M ...
Days 18–23 Bumps of mesoderm (somites) form. They will develop into the dermis and most of the ... Days 18–23 Bumps of mesoderm (somites) form. They will develop into the dermis and most of the ...
Events of an Ovarian/Mentrual Cycle Lasting Twenty-Eight Days Events of an Ovarian/Mentrual Cycle Lasting Twenty-Eight Days
Video: Metabolic Rate, Heat and Thermoregulation - response to heat and cold stresses

For a complete list of videos, visit our video library