A medication with a half life of 4 hours is given in doses of 200 milligrams 6 times a day. How much medication in milligrams is in the body after the 4th dose?

Q: Iodine-131 has a half life of 8 days. Your friend with a thyroid condition is given 40 mg of I-131…

A: Radioactive decay follows the first-order kinetics. The half-life of the first-order reaction does…

Q: Skeletal remains had lost 85%of the C-14 they originally contained. Determine the approximate age…

A:

Q: 7) The half life of silicon is 710 years. 40 grams are present now, how much will be present in 200…

A:

Q: 9. Suppose the amount of a certain radioactive substance in a sample decays from 3.80 mg to 1.70 mg…

A: Reaction in which rate is linearly depend upon one reactant is known as first order reaction.

Q: If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of…

A: Given : Half life of I-131 = 8 days Initial amount of I-131 = 10 mg And time passed = 24 days

Q: technetium-99 has a half-life of 6.0 hours. How many gramsin a 24.0 gram sample will remain…

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Q: A 1.50 x 10-6 M solution of Khal Drogo’s potion was prepared by Daenerys in 1948 to make him…

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Q: The half life of I-123 is 13 hours. If 29 mg if I-123 are administered to a patient, how much I-123…

A:

Q: 4. Iron-59, which is used to diagnose anemia, has a half-life of 45 days. What fraction of it is…

A: we know that,→ Radioactivity phenomena follow first owen                            knnetics.so,…

Q: The radioactive element carbon-14 has a half-life of 5750 years. A scientist determined that the…

A:

Q: Cobalt-60 has a half-life of 5.27 years and is used in cancer treatment. If a patient ingests 20.0 g…

A: Since the decay reactions are first order reactions hence the relationship between the time and mass…

Q: In a dusty corner of a spooky abandoned lab, you find a vial labeled “70g of iron-55”.  You weigh…

A: Welcome to bartleby !  We have to calculate time required

Q: Barium -122 has a half life of 2 minutes. Suppose you obtain a sample weighing 10.0g and it takes 10…

A: Since the decay reactions are first order reactions. Hence the half life of reaction will remain…

Q: Suppose that 10 units of beryllium are present in a living organism and that the half-life of…

A: Here i have calculated the age of material

Q: A scientist obtains 64 grams of a radioactive isotope.  The isotope has a half-life of 3.2 days.…

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Q: The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is…

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Q: 32) The charcoal from ashes found in a cave gave 3.34 14C counts per gram per minute. Wood from the…

A:

Q: 1. Iron-59, which is used to diagnose anemia, has a half-life of 45 days. What fraction of it is…

A: As in the question, it is given that Iron-59 is used to diagnose anaemia and has a half-life of 45…

Q: A substance has a half-life of 26 years. presently, if there are 6293 grams of the said substance,…

A:

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 6.70 mg to 700. µg…

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Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32P, how many grams will remain…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 1.60 mg to 900. µg…

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Q: How many grams will be left after 100 days if you have 150 g of thorium-234 at the beginning?…

A: Given,  The mass in grams will be left after 100 days of the decay, if initial amount of Th-234 is…

Q: A solution of sodium iodine containing the radioactive isotope Iodine-131 was given to a patient. If…

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Q: A radioactive waste from a clinical laboratory contains 0.2 µCi (microcuries) of calcium-45 (45Ca)…

A: Answer -

Q: A certain drug has a half-life in the body of 2.0 h. Suppose a patient takes one 200. mg pill at…

A:

Q: 1. Substance Q initially weighs 56 grams. After 6 minutes, it was observed that its mass decreased…

A:

Q: 1. If gallium - 68 has a half-life of 68.3 minutes, how much of a 160.0 mg sample is left after 1…

A: One half life is that time in which half of the radioactive substance gets decayed.

Q: A chemical substance has a half-life of 5 hours.If you start with a 133 gram sample when will there…

A: Introduction: We have to calculate the time when substance remaining is 2g.

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. What percentage of a sample would be…

A: Half-Life =12.3 years Time =13.0 years

Q: Define the term half-life as used in radioactivity. The half-life of carbon-14 is 5730 years. If the…

A: Half life in Radioactivity : It is the time required by a radioactive nuclei to decay to exactly…

Q: A 169 ng sample of radioactive material has a half life of 3.9 days. How many ng of radioactive…

A: Sample of redioactive material=169ng Half life=3.9days

Q: The 4520Ca has a Half-Life t1/2 of 163 days. the value of the radioactive constant λ in day-1 is:

A: Please find the attached images for the answer

Q: How old in years is a bottle of a solution if the deuterium 2H content is 67% that of a new wine?…

A: Radioactive decay follow first order kinectics    Half life = 100 years

Q: Cobalt-60 is radioactive and has a half life of 5.26 years. What percentage of a sample would be…

A: For the reaction - A   +     B      →      C     +      D Rate = KAnBm where n and m are order of A…

Q: chemist determines that a sample of petrified wood has a decay rate of 6.00 counts/minute-gram. What…

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Q: Simple Chemical Conversion A certain radioactive substance has a half-life of 38 hours. Find how…

A: We have given that a certain radioactive substance has a half life of 38 hours and we have to find…

Q: How many half-lives does it take a 10.0 gram sample of 12353I to drop to 0.625 grams? What length…

A: The time has to be calculated

Q: A patient is given a 0.05 of 6 hours. How long will it be until mg dose of e which has a holf-life…

A:

Q: Carbon-11 is a radioactive isotope of carbon. Its half-life is 20.3 minutes. What fraction of the…

A: When the rate of the reaction is directly proportional to the first power of the concentration of…

Q: 5. A tree falls in a forest. How many years must pass before the carbon-14 mass in the tree's carbon…

A: Suppose Initial amount = Ao Amount at time, t = 3.125% Ao  Half-life, t1/2 = 5570 years

Q: A certain drug has a half-life in the body of 2.0 h. Suppose a patient takes one 50.0 mg pill at…

A: A drug can be defined as medication which is used to cure and treat diseases.

Q: If a patient takes a drug with a half life of 20 hours in the body, after how much time with 1/16 of…

A: The half-life of the drug is 20 hours. For a first-order reaction, the half-life time does not…

Q: A solution of sodium iodine containing the radioactive isotope lodine-131 was given to a patient. If…

A: These radioactive decay reactions are the first order reactions . In these type of reactions , rate…

Q: If a patient takes a drug with a half-life of 20 hours in the body, after how much time will 1/16 of…

A: Given data  half life : t1/2 = 20 hr final drug remain = 1/16 of initial Use the following formula…

Q: A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What is…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: A patient is given a 0.05 mg dose of Tal which has a half-life of 6 hours. How long will it be until…

A:

Q: Thallium-201 is used medically to diagnose heart problems. The half-life of thallium- 201 is 72.9…

A:

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.