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

Author Question: Sodium-24 has a half-life of 15 h. How many hours is three half-lives? (Read 32 times)

roselinechinyere27m

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

Question 1

The half-life of bromine-74 is 25 min. How much of a 4.0 mg sample is still active after 75 min?
◦ 1.0 mg
◦ 0.25 mg
◦ 2.0 mg
◦ 4.0 mg
◦ 0.50 mg

Question 2

Sodium-24 has a half-life of 15 h. How many hours is three half-lives?
◦ 7.5 h
◦ 30 h
◦ 60 h
◦ 15 h
◦ 45 h
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

honnalora

  • Sr. Member
  • ****
  • Posts: 325
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 50% of students answer this correctly


roselinechinyere27m

  • Member
  • Posts: 557
Reply 2 on: Jun 7, 2021
Gracias!

bdobbins

  • Member
  • Posts: 326
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

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?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Life Cycle of Lobster Life Cycle of Lobster
Comparison of 24 hours in military Comparison of 24 hours in military
Life Table Life Table
RNA polymerase subunit structures in the three domains of life RNA polymerase subunit structures in the three domains of life
Ionic Bond: Sodium Chloride Ionic Bond: Sodium Chloride
Video: Nerve Impulse Transmission Animation

For a complete list of videos, visit our video library