CONNECT IA GENERAL ORGANIC&BIO CHEMISTRY
4th Edition
ISBN: 9781260562620
Author: SMITH
Publisher: MCG
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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
CONNECT IA GENERAL ORGANIC&BIO CHEMISTRY
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_forwardpractice questionarrow_forward
- TRY 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_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_forwardProblem 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_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_forwardExercise 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_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
- Question 10arrow_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_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_forward
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