Homework Chapter 5 (2) - Protected View - Saved to this PCViewHelpO Searcht's safer to stay in Protected View.Enable EditingChem 121Homework Chapter 5NameShow your work to receive full credit1. Use the following decay curve for iodine-131 (half life of 8.0 days) to answer a, b, c, d,80 HI20b.816Daysa.b.с.d.e.Mass of radioactive l (mg)

Answered: Image /qna-images/answer/9dd30d99-1fc0-4e8e-84d8-0bc45e460386.jpg

Answered: 1. Use the following decay curve for…

1. Use the following decay curve for iodine-131 (half life of 8.0 days) to answer a, b, c, d, I. 80 a 20 b. P. Days 16 e. Mass of radioactive 1 (mg)

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...

See similar textbooks

Related questions

Q: 4. A radioactive isotope has a half life of 40 years. If we started off with 10 mg of this isotope…

A: Given that: Half life of an isotope = 40 years Initial amount of isotope = 10 mg To find:…

Q: a. Two or more nuclei combine to form one larger nucleus in the process of nuclear_ i) fission, ii)…

A: We need to fill answers for the given short questions.

Q: a radionuclide (which has no parent) has a half- life of 8.0 days, how much of the original…

Q: Na-24 is a radioactive isotope that has a half-life of 15 hours. What percent of the original sample…

A: Radioactive decay follows first order kinetics. k = 0.693/t0.5 ....(1) Here, t0.5 = 15 hours…

Q: If a radioactive sample decays from 80.0 g to 11.7 in 10.0 days, what is the half-life (in days) of…

A: We will calculate decay constant, then using it we will find half life.

Q: 15. A mammoth skeleton has a carbon-14 decay rate of 0.48 disintegrations per minute per gram (0.48…

Q: 7. What is the half-life of an unknown substance if it is observed to decay from 15 mg to 3.75 mg in…

Q: 1-131 is used in medicine to diagnose and treat cancers of the thyroid gland. After 24.21 days, 36…

Q: 8. What mass of plutonium-240 will remain after 32,820 years if the initial sample contained 4.8 g…

A: No. of half lives = Total time/ half- lives n = 32820/6564 = 5 n = 5

Q: 8. How long does it take for 65.0% of each isotope to decay? Half-Life 27 s 11.5 min 14.8 h 2.1 X…

Q: Calculate the half-life of a radioisotope if it takes 72 years for a sample to decay to 12.5% of its…

A: 100 % to 50 % one t1/2. 50 % to 25 % second t1/2. 25% to 12.5 third t1/2. three t1/2 = 72 years.…

Q: 1. Phosphorous - 32 has a half - life of 14 days. After how many days will a 1000 mg sample decay…

Q: Magnesium-23 is a positron emitter with a half-life of 11.3039 min. How much of a 1.80-g sample of…

A: Radioactivity is a phenomenon in which nuclei of certain elements undergo spontaneous disintegration…

Q: 6. iodine-131 (tı/2 = 8.02 days) is one possible product of uranium-235 fission and is a major…

Q: 8. Strontium-90 has a half-life of 28.1 years. Starting with 2.08 mg of this isotope, what is the…

A: Radioactive decay follows first order kinetics. Using this we will calculate all parts of questions.

Q: Suppose 67.5% of a sample of radioactive 24Na has decayed after one day. Estimate the half-life of…

A: Solution is given below in next step

Q: Calculate the half-life of a radioisotope if it takes 144 years for a sample to decay to 12.5% of…

A: N = 0.125 No N/No = 0.125

Q: If a radioisotope is required to undergo a decay series in order to form a stable isotope at the…

Q: 90 The half-life of "Sr is 28 years. How long will it take for a given sample of "Sr to be 83%…

A: 1) half life = 28 years Decomposed = 83 % 2) half life = 39.4 days

Q: The half-life of the radioisotope 63 Eu 158 is 1.0 hour. How many hours will the decay of 160-g…

A: Half life of first order reaction is independent of initial concentration

Q: Phosphorus-32 is a radioactive isotope used as a tracer in the liver. How much phosphorus-32 was…

Q: 4. After 24.0 days, 2.00 grams of an original 128.0 gram sample remain. a. How many half-lives…

A: 4) Given that Initial mass of the sample (C0) =128.0 g Mass of the sample remained after 24.0 days…

Q: The half-life of carbon-14 is 5,730 years. Write the exponential decay function and find k. If the…

A: Half life:It is represented by the symbol t1/2. It was discovered by Rutherford. It is defined as…

Q: 3. What is the half-life of a 100.0 g sample of nitrogen-16 that decays to 12.5 g of nitrogen-16 in…

A: Given: Initial mass of nitrogen-16 (N0) = 100g Final mass of nitrogen-16 (N) = 12.5g Time (t) = 21.6…

Q: a radioactive isotope. Z-109 has a half life off 43.1 years. how manny years Will it take the sample…

Q: lodine-131 is a radionuclide that is frequently used in nuclear medicine. Among other things, it is…

A: Sample mass of Iodine - 131 initially = 0.16 gram Half life of iodine-131 = 8 days We know that…

Q: 5. Write a nuclear reaction to describe the following processes. Then calculate the energy change…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. How long would it take a sample to…

A: Given that - Hydrogen-3 is tritium which is a radioactive isotope with half life = 12.3 years…

Q: F-18, also referred to as Fludeoxyglucose is a radiopharmaceutical that is used in medical imaging,…

A: The form of energy produced due to the interaction between an electric field and magnetic field that…

Concept explainers

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.

Question

100%

Homework Chapter 5 (2) - Protected View - Saved to this PC
View
Help
O Search
t's safer to stay in Protected View.
Enable Editing
Chem 121
Homework Chapter 5
Name
Show your work to receive full credit
1. Use the following decay curve for iodine-131 (half life of 8.0 days) to answer a, b, c, d,
80 H
I
20
b.
8
16
Days
a.
b.
с.
d.
e.
Mass of radioactive l (mg)

Expert Solution

Step 1

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

12. In the equation X Ra +He, the symbol X Tర్రాతయీ A. Th B. Th C. Rn D. Rn An 80 milligram sample of a radioactive isotope decays to 5 milligrams in 32 days What is the half-life of this element? 13. A. 8 days B. 2 days C. 16 days D. 4 days
Q7. A 150 grams of a radioactive gas is accumulated in a container. After 3 months, only 141 grams of the gas remains. What is the monthly rate of decay for this gas? What is the half-life of this gas in year?
Macmillan l 30: F2 W S A 210.2 ng sample of an unknown radioactive substance was placed in storage and its mass measured periodically. After 47 days the amount of radioactive substance had decreased to 26.28 ng. How many half-lives of the unknown radioactive substance have occurred? number of half-lives: #3 H 80 F3 mmand E D A GA $ X C 4 OOD 886 F4 R F % от ото 5 V F5 T G ^ 6 B F6 Y & 7 H 8 F7 U N 00 * 8 DII FB J L - ( 9 M K DD F9 O . V - ... I 4 F11 { [ option + = ? 11 1 F12 } ] half-lives delete return st
Calculate how long will it take for a sample of a radionuclide with a half-life of 39.9 days decay to 1.0% of its original value. a. 133 days b. 265 days c. 399 days d. 0.58 days
Sodium-24 has a half-life of 14.8 hours. How much of a 595.7 mg sodium-24 sample will remain after 3.7 days? mass remaining: mg about us careeis- privacy policy terms of use contact us help 8:11 PM 4/28/2021 12 insert t9 f8 立

Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k in s? k = b. A sample contains 84.0 mg *°V. How many decay events will be produced in the first second? Assume the atomic mass of **V is 48.0 u. decays/s c. A chemist obtains a fresh sample of 48 V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25% of the initial measured value. How long does she have to do the experiment? days
2. Tellurium-123 is a radioactive isotope occurring in natural tellurium. The decay constant is 1.7 x 1021 / s. What is the half-life in years?