You have started a patient on a new drug. Each dose introduces 40 pg/mL of drug after redistribution and prior to elimination. This drug is administered at 24 h intervals and has a half life of 24 h. What will the concentration of drug be after each of the first six doses? Show your work a. What is the concentration after the first dose? in pg/mL b. What is the concentration after the second dose? in pg/mL c. What is the concentration after the third dose? in pg/mL

You have started a patient on a new drug. Each dose introduces 40 pg/mL of drug after redistribution and prior to elimination. This drug is administered at 24 h intervals and has a half life of 24 h. What will the concentration of drug be after each of the first six doses? Show your work a. What is the concentration after the first dose? in pg/mL b. What is the concentration after the second dose? in pg/mL c. What is the concentration after the third dose? in pg/mL

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter32: Radiochemical Methods

Section: Chapter Questions

Problem 32.9QAP

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You have started a patient on a new drug. Each dose introduces 40 pg/mL of drug after redistribution and prior to elimination. This drug is administered at 24 h intervals and has a half life of 24 h. What will the concentration of drug be after each of the first six doses? Show your work a. What is the concentration after the fourth dose? in pg/mL b. What is the concentration after the fifth dose? in pg/mL c. What is the concentration after the sixth dose? in pg/mL
Cor • Part A The half-life for the radioactive decay of U – 238 is 4.5 billion years and is independent of initial concentration. How long will it take for 16 % of the U – 238 atoms in a sample of U – 238 to decay? Express your answer using two significant figures. Templates Symbols ugdo redo reset keyboard shortcuts help t = уг Submit Request Answer Part B If a sample of U – 238 initially contained 1.3x101° atoms and was formed 6.1 billion years ago, how many U – 238 atoms does it contain today? Express your answer using two significant figures. Templaes Symbols uado redo rest keyboard shortcuts help, N = atoms
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very strong back drugs on the tumor sizes of mice. The doctor is searching for the correct combination of medications that will make the tumor shrink in size. The drugs he has at his disposal are drugs / B and C. His experiments are summarized below. Average rate of Exp. [A), in [B], in [C], in shrinkage M M M # |(mm/week) 0.0010 0.0020 0.0030 0.010 II 0.0010 0.0010 0.0020 0.0050 0.0030 0.0020 0.0015 0.090 0.0030 0.0020 0.0030 0.090 II IV What is the rate law for this system? %23
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A certain radioactive isotope, used in a dye to detect blood clots, has a half-life of 18.25 minutes. If 230 mg of the isotope is initially injected into the bloodstream, determine the remaining mass (in mg) of the isotope after 1.25hours? Note: y=A(1+r) t/k a. What is your value for r : b. What is your value for k : c. What is your value for t : mins d. What is your final answer :
Can I get a thorough step by step for the following question? The decay of chlorine in a distribution system follows first order decay (kinetics) with a rate constant of 0.36 d. If the concentration of chlorine is a well-mixed water storage tank is 1.00 mg/L at time zero, what will the concentration be one day? Assume no water flows out of the tank. a. 0.360 mg/L c. 0.500 mg/L b. 0.368 mg/L d. 0.698 mg/L
The half life for the radioactive decay of carbon-14 to nitrogen-14 is 5.73 x 10° years. Suppose nuclear chemical analysis shows that there is 0.836 mmol of nitrogen-14 for every 1.000 mmol of carbon-14 in a certain sample of rock. Calculate the age of the rock. Round your answer to 2 significant digits. years Submit Assignm 2020 McGraw Hill Education All Rights Reserved Terms of Use Privacy Acces MacBook Pro CHR %23 3 %24 E R Y U A G C V command command
I just need help with the b but you need a for info. a) The half-life of Carbon-14, which diminishes by first order radioactive decay, is 5730 years. What are the value and units of the rate constant? 1.2094x10^-4 years b) A human bone uncovered in a burial site in Majorca, Spain by a student working for the pollentia project with the chemistry and biology department was found to contain 5.55% of the amount of Carbon-14 found in a living being before the burial. Determine the age of the human remain.
Attached is the basic model for an enzyme-catalyzed reaction. Assume that substrate binding is rate determining. Write the equations for the total amount of enzyme in the reaction and the rate of the reaction. Is A or B correct? If not, show work for the correct answer A : [E] = [ES] + E B : [E] = [E]0 - [ES] ; r= k2 [E]0 S / kM + [E]
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1.A vial of 133Xe gas is calibrated at 22 MCI at 6 a.m. on March 1st what is its activity at 6 p.m. on March 8th 2.51 Cr sodium chromate standard solution contain 15 uCi/ ml when it was produced. What is the activity per ml 60 days later? 3. A vial of generator eluate contains 432 MCI immediately following elution. How many MCI will remain 8 hours later? 4.131 I sodium iodide capsule was calibrated for 7.3 MCI at 12 pm on May 1Oth. If the half life is 8.05 days, what will be the capsules activity at noon on May 23rd?