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 58 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!

hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Hepatitis B Life Cycle Hepatitis B Life Cycle
Stereotypes, which play such a profound role in social life, are a basic area of sociological ... Stereotypes, which play such a profound role in social life, are a basic area of sociological ...
Life cycle of Entamoeba histolytica. Life cycle of Entamoeba histolytica.
The Life Cycle of a Midlatitude Cyclone: Cyclogenesis The Life Cycle of a Midlatitude Cyclone: Cyclogenesis
Cells are the basic units of life Cells are the basic units of life
Chlamydomonas Life Cycle Chlamydomonas Life Cycle
Video: Properties of macromolecules (Explained with No Audio)

For a complete list of videos, visit our video library