Please do number 36.(The answer is 3.09g. Please show me the work.)Thank you! InitialAmount AfterHalf-life(years)1000 YearsIsotopeQuantity33. 226RA159910g94. e57156.5835.Pu24,1002.1g36. 226Ra159928220738.24,1000.48ru

Answered: Initial Amount After Half-life (years)…

Initial Amount After Half-life (years) Isotope Оuantity 1000 Years 33. 226RA 1599 10 g 94. e 5715 6.58 35. Pu 24,100 2.1g 36. 226Ra 1599 2 g

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter9: Energy For Today

Section: Chapter Questions

Problem 9E

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Question

Please do number 36.

(The answer is 3.09g. Please show me the work.)

Thank you!

Initial
Amount After
Half-life
(years)
1000 Years
Isotope
Quantity
33. 226RA
1599
10g
94. e
5715
6.58
35.
Pu
24,100
2.1g
36. 226Ra
1599
28
2207
38.
24,100
0.48
ru

Expert Solution

Step 1 radioactivity

in radioactivity is defined as unstable nuclei is decay into stable nuclei and emits electromagnetic rays ,

Step 2 calculation

reaction between half life and= decay amount

A = A° (1/2)ⁿ

n = no. Of half life = t / t_1/2

A° = initial amount

amount after 1000 years = 2g

t_1/2= 1599 years,

n = 1000/1599 = 0.625

2 = A° (1/2)^0.625

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