(3) (HAND IN) After 1010 years a radioactive substance has decayed so that sevenninths of the original amount remains.(a) What is the half-life of this substance?(b) Given that after 1012 years the amount of substance remaining is 10 unitsdetermine the original amount.(c) How long will it take until only 3/80 of the initial amount remains?

Part a: Finding the Half-LifeStep 1: Analyze the Given InformationWe are given that after 10 years,…

Answered: (3) (HAND IN) After 1010 years a…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Similar questions

Q represent a mass (in grams) of carbon , whose half-life is 5715 years. The quantity of 1 carbon 14 present after t years is Q = 10() t/5715 How long will it take until only 4 grams2remain? how do I do this and what equation do I use?
If an ancient piece of wood is found to have one-sixteenth the original amount of carbon-14 in it, then how old is it if the half-life of this isotope in 5,730 years?
If 25%(1/4)of a radioactive element remains after1,000years, what is the half-life?
The radioactive isotope I-131is used in the treatment of hyperthyroidism. When administeredto a patient, I-131 accumulates in the thyroid gland, where it decays and kills part of thatgland. Consider the half-life of 8 days.a) Suppose that it takes 72 hours to ship I-131 from the producer to the hospital. Whatpercentage of the original amount shipped actually arrives at the hospital.b) If the I-131 is stored at the hospital for an addition 48 hours before it is used, how muchof the original amount shipped from the producer is left when it is used?c) How long will it take for the I-131 to decay completely so that the remnants can be thrownaway without special precautions?
An unknown radioactive element decays into non-radioactive substances. In 440440 days the radioactivity of a sample decreases by 3737 percent.(a) What is the half-life of the element?half-life: (days)(b) How long will it take for a sample of 100100 mg to decay to 6060 mg?time needed: (days)
The half-life of carbon-14 is about 5730 years. If an ancient leather strap is about 11,500 years old, what percentage of carbon-14 in a now-living object remains in the strap? O 100% 50% O 25 % none O O O O

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