Loose Leaf for General, Organic and Biological Chemistry with Connect 2 Year Access Card
4th Edition
ISBN: 9781260269284
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Chapter 10.4, Problem 10.6PP
A sample of iodine-131
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Lead-194 has a half-life of 11 minutes. A sample of lead-194 with a mass of 0.149g is allowed to decay for 66 minutes. What mass of lead-194 in grams remains in the sample after 66 minutes?
a. 2.33 x 10 -3
b. 2.48 x 10 -4
c. 2.25 x 10 -4
d. 1.35 x 10 -2
e. no correct response
Exercise 17.76
A 56 mg sample of a radioactive nuclide is administered to a
patient to obtain an image of her thyroid.
Part A
If the nuclide has a half-life of 12 hours, how much of the nuclide remains in the patient after 5.0 days?
Express your answer using two significant figures.
mg
mg =
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Potassium-44 decays by beta emission with a half-life of 22 minutes. A 125mg sample of the isotope is allowed to decay for 88 minutes. What mass of K-44 in mg remains in the sample after the 88 minutes?
a. 7.81mg
b. 15.6mg
c. 31.5mg
d. 62.5mg
e. no correct response
Chapter 10 Solutions
Loose Leaf for General, Organic and Biological Chemistry with Connect 2 Year Access Card
Ch. 10.1 - Complete the following table for two isotopes of...Ch. 10.1 - Prob. 10.1PCh. 10.1 - Prob. 10.2PCh. 10.1 - Prob. 10.3PCh. 10.1 - Identify Q in each of the following symbols. a....Ch. 10.2 - Prob. 10.5PCh. 10.2 - Prob. 10.6PCh. 10.2 - Prob. 10.7PCh. 10.2 - Prob. 10.2PPCh. 10.2 - Prob. 10.8P
Ch. 10.2 - Prob. 10.3PPCh. 10.2 - Prob. 10.9PCh. 10.2 - Prob. 10.10PCh. 10.2 - Prob. 10.11PCh. 10.3 - Prob. 10.4PPCh. 10.3 - Prob. 10.12PCh. 10.3 - Prob. 10.13PCh. 10.3 - Prob. 10.14PCh. 10.4 - To treat a thyroid tumor, a patient must be given...Ch. 10.4 - A sample of iodine-131 (t1/2=8.0 days) has an...Ch. 10.4 - Prob. 10.15PCh. 10.5 - Prob. 10.16PCh. 10.5 - Prob. 10.17PCh. 10.5 - Prob. 10.18PCh. 10.6 - Prob. 10.7PPCh. 10.6 - Prob. 10.8PPCh. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 24PCh. 10 - Prob. 25PCh. 10 - Prob. 26PCh. 10 - Prob. 27PCh. 10 - Prob. 28PCh. 10 - Prob. 29PCh. 10 - Prob. 30PCh. 10 - Prob. 31PCh. 10 - Prob. 32PCh. 10 - Prob. 33PCh. 10 - Prob. 34PCh. 10 - Prob. 35PCh. 10 - Prob. 36PCh. 10 - Prob. 37PCh. 10 - Prob. 38PCh. 10 - Prob. 39PCh. 10 - Prob. 40PCh. 10 - Prob. 41PCh. 10 - Prob. 42PCh. 10 - Prob. 43PCh. 10 - Prob. 44PCh. 10 - Prob. 45PCh. 10 - Prob. 46PCh. 10 - Prob. 47PCh. 10 - Prob. 48PCh. 10 - Prob. 49PCh. 10 - Prob. 50PCh. 10 - Prob. 51PCh. 10 - Prob. 52PCh. 10 - Prob. 53PCh. 10 - Prob. 54PCh. 10 - Prob. 55PCh. 10 - Prob. 56PCh. 10 - Prob. 57PCh. 10 - Prob. 58PCh. 10 - Prob. 59PCh. 10 - Prob. 60PCh. 10 - Prob. 61PCh. 10 - Prob. 62PCh. 10 - Prob. 63PCh. 10 - Prob. 64PCh. 10 - Prob. 65PCh. 10 - Prob. 66PCh. 10 - Prob. 67PCh. 10 - Prob. 68PCh. 10 - Prob. 69PCh. 10 - Prob. 70PCh. 10 - Prob. 71PCh. 10 - Prob. 72PCh. 10 - Prob. 73PCh. 10 - Prob. 74PCh. 10 - Prob. 75PCh. 10 - Prob. 76PCh. 10 - Prob. 77PCh. 10 - Prob. 78PCh. 10 - Prob. 79PCh. 10 - Prob. 80PCh. 10 - Prob. 81PCh. 10 - Prob. 82PCh. 10 - Prob. 83PCh. 10 - Prob. 84PCh. 10 - Prob. 85PCh. 10 - Prob. 86PCh. 10 - Prob. 87PCh. 10 - Prob. 88PCh. 10 - Prob. 89CPCh. 10 - Prob. 90CP
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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
- Problem 1. It takes 5.2 min for a 1.000 - g sample of 210Fr to decay to 0.250 g. What is the half-life of 210Fr? Problem 2. How much time is required for a 6.25 - mg sample of "Cr to decay to 0.75mg if it has a half-life of 27.8 days?arrow_forwardIodine-131 is administered orally in the form of NaI(aq) as a treatment for thyroid cancer. The half-life of iodine-131 is 8.04 days. If you begin with 53.0 mg of this isotope, what mass remains after 18.8 days have passed? mg Submit Answer Try Another Version 4 item attempts remainingarrow_forwardTRY CHEMWORK A certain radioactive nuclide has a half life of 3.00 hour(s). Calculate the rate constant for this nuclide. S-1 Calculate the decay rate for 1.000 mole of this nuclide. decays s-¹ Submit Submit Answer Try Another Version 1 item attempt remainingarrow_forward
- Intercomverting Iodine-125 is radioactive and has a half life of 60.25 days. How much of a 5.60 mg sample would be left after 88.1 days? Round your answer to 2 significant digits. Also, be sure your answer has a unit symbol. Explanation Check O 2021 McGraw-Hill Education. All Rights Reserved Terms of Use Privacy Ac MAY 10 Warrow_forwardA radioactive sample initially contained 1000 radioactive atoms. After 60 minutes, only 250 radioactive atoms remained. What is the isotope's half-life in minutes? a. 60 b. 30 c. 20 d. 15 e. no correct responsearrow_forwardProblem 9-5 Barium-122 has a half-life of 2 minutes. Suppose you obtained a sample weighing 10.0 g and it takes 10 minutes to set up an experiment in which the barium-122 is to be used. How many grams of barium-122 will remain at the point when you begin the experiment?arrow_forward
- Problem 9-6 A radioactive isotope in a 9.0-mL vial has an intensity of 300. mCi. A patient is required to take 50. mCi intravenously. How much liquid should be used for the injection?arrow_forwardQuestion 45 f the half life of P-32 is 14 days, how many grams will remain after 42 days if we start with a 100.0 gram sample? A) 50.00 grams B) 25.00 grams C 12.50 grams D 6.250 grams esc -> %23 % & Σarrow_forwardCesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of cesium-137 is 30.2 years. How much time is required for the activity of a sample of cesium-137 to fall to 26.0 percent of its original value? yrs Submit Answer Try Another Version 3 item attempts remainingarrow_forward
- Exercise 2. Determine the half-life of an element If you start with 128 parent atoms of a radioactive element which has a half-life of 30 million years, then how many total millions of years does each of the following represent? SCENARIO 64 parent atoms (50%) remaining 32 parent atoms (25%) remaining 16 parent atoms (12.5%) remaining 8 parent atoms (6.25%) remaining 20 parent atoms L %) remaining # of half-lives? # of million yrs.arrow_forwardProblem 3. Radium-226, which undergoes alpha decay, has a half-life of 1600yr. (a) How many alpha particles are emitted in 5.0 min by a 10.0-mg sample of 226 Ra ? (b) What is the activity of the sample in mCi ? Problem 4. Cobalt-60, which undergoes beta decay, has a half-life of 5.26yr. (a) How many beta particles are emitted in 600 s by a 3.75 – mg sample of "Co ? (b) What is the activity of the sample in Bq?arrow_forwardRadioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222 is 3.82 days. If you begin with 75.5 milligrams of radon-222, how many milligrams will you have left after 11.5 days have passed? __________-mg Submit Answerarrow_forward
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