A particular radioactive material was weighed exactly 1 year ago,showing a mass of 200 g. If the mass was measured today, showingonly 7.1 g remaining, calculate the half-life of the radioactive material.Please give your answer in units of days, rounded to the nearest day. The graph illustrates how the number of atoms of a particular type ofradioactive substance changes with time. Examine it and determine, asaccurately as you can, the half-life of the substance. Input the correctanswer.10009008004 700600O 500400300200100300Time (days)50100150200250350400450500Select one:100 daysa.b. 50 days350 daysC.O d. 500 daysNumber of particles

a) Calculate the decay constant. N(t)=Noe-λt λ=1tlnNoN Substitute the values. λ=1365 daysln200 g7.1…

A particular radioactive material was weighed exactly 1 year ago, showing a mass of 200 g. If the mass was measured today, showing only 7.1 g remaining, calculate the half-life of the radioactive material. Please give your answer in units of days, rounded to the nearest day.

A particular radioactive material was weighed exactly 1 year ago, showing a mass of 200 g. If the mass was measured today, showing only 7.1 g remaining, calculate the half-life of the radioactive material. Please give your answer in units of days, rounded to the nearest day.

Foundations of Astronomy (MindTap Course List)

14th Edition

ISBN:9781337399920

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter7: Atoms And Spectra

Section: Chapter Questions

Problem 4RQ

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.

Question

A particular radioactive material was weighed exactly 1 year ago,
showing a mass of 200 g. If the mass was measured today, showing
only 7.1 g remaining, calculate the half-life of the radioactive material.
Please give your answer in units of days, rounded to the nearest day.

The graph illustrates how the number of atoms of a particular type of
radioactive substance changes with time. Examine it and determine, as
accurately as you can, the half-life of the substance. Input the correct
answer.
1000
900
800
4 700
600
O 500
400
300
200
100
300
Time (days)
50
100
150
200
250
350
400
450
500
Select one:
100 days
a.
b. 50 days
350 days
C.
O d. 500 days
Number of particles

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