A sample initially contains 300 µg of 32Si (31.97415 amu), which decays with ahalf-life of 160 years.What is the initial rate of decay in this sample?a.do euiev d solantonotouboWhat is the rate of decay after 50 years?b.cdaimod lou-Ic. How long does it take for the decay rate to fall to 10% of the initial?

The nuclear reactions are a type of chemical processes which lead to the formation of some new…

Answered: A sample initially contains 300 µg of…

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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Phosphorus-32 is a radioactive isotope used as a tracer in the liver. How much phosphorus-32 was originally used if there is only 3.50 mg left in a sample after 288 h? (The half life of phosphorus-32 is 14.3 days.) A. 1.96 mg B. 7.00 mg C. 6.26 mg D. 17.9 mg E. 4.17 mg
What is the half-life of the isotope with the decay profile shown here? Half-life definition-the time it takes for half the original amount of a radioactive sample to decay.
3. The isotope 212Bi has a half-life of 1.01 yr. What mass, in mg, of a 2.00 mg sample will remain after 3.75 x10³ hrs? a. First calculate the rate constant. b. Now use the initial mass to determine the mass after 3.75x10³ hrs.
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he half-life of 14/6 C is 5730 years. If a mummy wrapping contains about 1/2 as much 14/6 C as modern cotton fabric, the age of the mummy must be about __________ years. A. 17,400 B. 23,200 C. 11,600 D. 5800
Iodine-131 is used medically for the diagnosis of thyroid illnesses. The rate constant for the decay of I-131 was found to be 8.66x10^-2/day. A.) calculate the half life of I-131 B.) If 0.25 mg of I-131 was administered to a patient, how much of the isotope (in g) will remain after 120 hours?
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part: j,k
42 The half-life of 1K is 12.5 hrs. How much will remain after 65 hrs if the original 19- sample contained 256 g of K? 19 7.0 g 11 g 20 g 24 g 17 g
Cobalt-60 is a radioactive isotope that is widely utilized in nuclear medicine as a -ray source. It is formed through a neutron capture reaction with cobalt-59 and is a ß emitter; ß emission is associated with intense radiation. If Co-60 has a half-life of 5.27 years: a. How long will it take for the Co-60 source to be reduced to one-eighth of its initial concentration? b. What percentage of the Co-60 source will remain after three years (rounded to two decimal places)?
A radioisotope has a half-life of eight hours. If a patient has been given an 120 ng dose, the amount of radioisotope in ng remaining after 24 hours is (reaction is first order): 60 O 15 O 10 30 O 7.5 Moving to another question will save this response. hp ins 12 f8 f9 f1o 10 f6 17 fa fs %24 7 8. 9- 3 5 E R. Y U

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