Cesium-131 is the latest tool of nuclear medicine. It is used to treat malignant tumors by implanting Cs-131 directly into the tumor site. Its first-order half-life is 9.7 days. If a patient is implanted with 20.0 mg of Cs-131, how many days will it take for 13% of the isotope to remain in his system?

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A:

Q: A compound decomposes by a first-order process. If 13% of the compound decomposes in 60 minutes, the…

A: Given values- Time = 60 minutes Decomposition = 13%

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A: We will use integrated rate law and half life period of first order kinetics to calculate the…

Q: Copper-64 is used in the form of copper acetate to study brain tumors. It decays by a first-order…

A: Given that,half-life, t1/2 = 12.8 hoursInitial quantity, No = 33 mg Now find Nt at t = 3days +…

Q: Calculate the half-life of a first-order reaction if 66% of the reactants are reacted within 66 s.

A: Given- Reaction is first order reaction assume reactant is 100% Reactant reacted =66% Reactant…

Q: Calculate the half-life (in minutes) for a radioactive substance which loses 42.5% of its original…

A: After 1 hour it loses 42.5% of its original intensity, which means after 1 hour 57.5% of the…

Q: Radioactive decay is a process that follows first-order kinetics. The half-life of 24Na is 0.001712…

A:

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A: Given:Initial concentration = 1.1 μg/mLTime = 268 min

Q: When a 5.00x10² mg aspirin tablet is taken it decomposes via zeroth order kinetics with a half-life…

A: Given 5X102 mg tablet of aspirin decomposes via zero order with half life of 3.1 hrs We have to…

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A: The half-life of the first-order reaction does not depend on the initial concentration of the…

Q: A certain medication contains 200 mg of active ingredient per tablet. The medication is metabolized…

A: Initial Amount = 200 mg  According to question 150 mg has been metabolised in the body &…

Q: Radioactive decay is a process that follows first-order kinetics. The half-life of 41Ar is 0.01256…

A: First order reaction is a reaction in which the rate of reaction is directly proportional to the…

Q: Match the half-life to the rate constant assuming that the initial conce k = 0.5 M/s k = 0.5/ (M s)…

A: A) k = 0.5 M/s From the unit of rate constant, it is zero order reaction.  half life = Ao/2k   =…

Q: What is the half-life in minutes of a compound if 75.0 percent of a given sample decomposes in 80.0…

A: Step 1: For the given condition the kinetics is considered to be first order. A first order kinetics…

Q: Iodine-131 is used to treat tumors in the thyroid. Its first order half life is 8.1 days. If a…

A: Decay of I-131follow 1st order kinetics λ (decay constant) = 0.693/t1/2 = 0.693 / 8.1 days = 8.56…

Q: What is the half-life in minutes of a compound if 75.0 percent of a given sample decomposes in 25.0…

A: The relationship between concentration and time for first-order reaction is given by

Q: The rate constant of a first-order process that has a half-life of 521 s is __________ s−1. A.…

A: The reaction carrying direct connection between reaction's rate and reacting molecule's…

Q: When a 5.0010 mg aspirin tablet is taken it decomposes via zeroth order kinetics with a half-life of…

A: The time in which the concentration of a species becomes half of its initial concentration is called…

Q: A radioisotope of iodine, 131I, is used to study thyroid function. A patient is given a sample that…

A: Given: The concentration of the 131I sample = 1.70 × 10-4 M The half-life of 131I = 8.04 days. We…

Q: Give the characteristic of a first order reaction having only one reactant. O The rate of the…

A: Introduction: We have to tell the correct statement when reaction has only one reactant.

Q: how long (in minutes) would it take for the amount of 41Ar to decrease to 54.04% of its initial…

A:

Q: Be sure to answer all parts. Archaeologists can determine the age of artifacts made of wood or bone…

A: The rate constant (k) of the given first-order process is calculated using equation (1) in which…

Q: Calculate the rate constant (in seconds) for the decomposition of insulin if the insulin polypeptide…

A: Decomposition is a first order reaction. Half life, t1/2 = 8 min = 480 seconds  [1 minute = 60…

Q: What is the half-life of compound if 75 percent of a given sample of the compound decomposes in 60…

A: The given information says that the reaction is first order kinetics. First determine the rate…

Q: What is the rate constant (s -1) of a first-order process that has a half-life of 364 s?   -1.37 ×…

A: For first order of Reaction the half life period can be written as -   t1/2 = 0.692/k Or k =…

Q: Americium-241 is used in smoke detectors. It has a first-order rate constant for radioactive decay…

A: Since the reaction is first order, then the relationship between rate constant and half-life period…

Q: Americium-241 is used in smoke detectors. It has a first-order rate constant for radioactive decay…

A: Given:  First order rate constant K=1.6×10-3 yr-1 Rate constant for the decay of iodine k=0.011…

Q: Radioactive gold-198 is used in the diagnosis of liver problems. The half- life of this isotope is…

A: First using given value determine the rate constant, k value. t1/2=2.7…

Q: 8. A nuclear stress test utilizes a gamma-emitting radioisotope such as thallium-201 to follow the…

A: Since the decay of thallium-201 follows first order reaction. Thus, it must follow the kinetics…

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A:

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A: Given data First order kinetics  Half life = 77 min. Initial concentration = 0.34 ug/mL time (t) =…

Q: What is the half-life of a compound if 65 percent of a given sample of the compound decomposes in 59…

A:

Q: A reactant decomposes with a half-life of 197s when its initial concentration is .279 M. When the…

A: The rate law of a chemical reaction gives the dependence of its rate on a rate constant "k" and the…

Q: Radioactive decay follows first-order kinetics. If sodium-24 has a half-life of 14.96 hours, what is…

A:

Q: (a) What is activation energy? What role does activation energy play in chemical kinetics? (b) What…

A: there are certain criteria for any chemical reaction to occur and activation energy is one of them…

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A: The expression of half-life (t1/2) for a first-order reaction is: t1/2=0.693k······(1) Here, k is…

Q: Radioactive gold-198 is used in the diagnosis of liver problems. The half-life of this isotope is…

A:

Q: Radioactive gold-198 is used in the diagnosis of liver problems. The half-life of this isotope is…

A: Radioactive gold-198 is used in the diagnosis of liver problems. t1/2 = 2.7 days m0 = 5.6 mg How…

Q: 5. 6. 7. What is an activated complex? an unstable arrangement of atoms formed as reactant bonds are…

A: Dear student , since you have posted multiple questions we solve first three questions for…

Q: The radioisotope 1"C (half life = 5730 years) is used for carbon dating. What is the first order…

A: Given :- half life of radioactive 14C i.e. t1/2 = 5730 years  To calculate :- value of first order…

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A:

Q: Explain enzyme kinetics including zero-order and first-order kinetics.

A: Answer - Enzyme kinetics - Enzyme kinetics is the study of the rates of enzyme-catalysed chemical…

Q: Part B A certain second-order reaction (B→products) has a rate constant of 1.20x10-3 M-1.s-1 at 27…

A:

Q: Cesium-131 is the latest tool of nuclear medicine. It is used to treat malignant tumors by…

A: Given T1/2 = 9.7 days Initial concentration = 20 mg

Q: Define the following terms:(i) Pseudo first order reaction(ii) Half life period of reaction (t1/2)

A: (i) Pseudo first order reaction : When a second order or higher order reaction is converted into…

Q: How many half-lives are required for the concentration of reactant to decrease to 1.56% of its…

A: final concentration is 1.56 %  So, initial concentration will be 100 %

Q: Archaeologists can determine the age of artifacts made of wood or bone by measuring the amount of…

A:

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A:

Q: The radioactive isotope 99mTc (used in medical stress tests) decays via gamma emission following…

A: The time taken to reach the final value can be calculated as follows : t = 2.303/K * log [A]o/[A]…