Old www.saplinglearning.com/ibiscms/mod/ibis/view.php?id=2875983 10/25/2016 11:5

Question

Old www.saplinglearning.com/ibiscms/mod/ibis/view.php?id=2875983 10/25/2016 11:55 PM A 80.8/10010/20/2016 05:36 PNM Gradebook O Assignment Information Available From: 10/13/2016 06:00 PM Due Date: Points Possible: 100 Grade Category: Graded #Attempts Score Print CalculatorPericdic Table Question 8 cf 17 10/25/2016 11:55 PM 90 Sapling Learning A sample of an unknown isotope decays according to the figure. What is the half-life? ODU 10 100 You can check your answers. years You can view solutions after the due date. RO You have three attempts per question. 10 You lose 10% of the points available to each answer in your question for each incorrect attempt at that answer 40 For multiple-choice questions, the penalty depends on the number of choices available. 12 13 eTextbook 14 0 5000 10,000 15000 20000 Help With This Topic 15 Time (Years) OWeb Help & Videos 16 Previous Check An wer NextExit Technical Support and Bug Reports 17 © 2011-2016 Sapling Learning, Inc. , 32 about us careers partners privacy policy terms of use contact us help 1'iCY ..) 10/20/2016 6:53 PM

Explanation / Answer

A sample of unknown isotope decays according to the figure. What is the half life?

Time (years) 25,000 and % of unknown element’s Atoms 100

Full life of isotope is25,000 years and its half life is 12,500 years

Potassium-40 (K40) has half life of 12,500 years

The thickness of a terrestrial planet’s atmosphere determined primarily by

Answer: Its temperature and whether it has rings

Rank the objects below by the thickness of their atmosphere, starting with thickest atmosphere first

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.