A radioactive iodine sample has a half life of 6 days. If the original sample is 24 grams, how much radioactive sample remains after 24 days? 22.5 grams 3 grams O 1.5 grams O 0.75 grams

Q: Use the References to access important values if needed for this question. The radioactive isotope…

A: To find half life.

Q: Pls. refer to the given answer choices so that i will know if my solution is wrong

A: 100% undecayed  at time 0 .

Q: 4. Tritium has a half-life of 12.5 years. If you had a sample of 8.00g of tritium today, how many…

A: Half life (T) = 12.5 years  Time (t) = 37.5 years  Original sample (No) = 8.00 grams  Undecayed…

Q: bromine-88 is radioactive and has a half life of 16.3 seconds. how long would it take a sample to…

A: Applying concept of radioactive decay as first order reaction.

Q: How many half‑lives of the unknown radioactive substance have occurred?

A: As we know that decay of radioactive substance follows first order kinetics

Q: If two grams of a radioactive isotope has a half-life of twenty hours, the half-life of one gram of…

A: We will use first order intergrated rate equations and half life to answer this question.

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: A radioactive sample has a half-life of 3.0 min. What fraction of the sample is left after 12 min? O…

A:

Q: A radioactive isotope has a half-life of 84.3 minutes. How long will it take for the radiation from…

A:

Q: Sulfur-38 Original amount: 5.0 g Amount left: c Total time: 8.61 h Half-life: 2.87 h Number of…

A:

Q: Complete the table for the radioactive isotope. Isotope 239 Pu, Half Life (In years) 24100, Initial…

A: The amount of time required by an element to reduce to half its quantity is called its half-life.

Q: lodine has a half-life of 8.07 days. What fraction of a sample of iodine-131 will be left after…

A: The given information is as follows: The half life of the Iodine = 8.07 days The fraction of sample…

Q: Enter your answer in the provided box. A rock sample originally contains 3.20 mg of 238U. How much…

A: Given data  Initial amount of 238U : No= 3.20 mg final amount of 238U : N = ? mg half life  : t1/2 =…

Q: Technetium-99m, an important radionuclide in medicine, has a half-life of 6.0 hours. What percentage…

A: Formula for radioactive decay is given as,

Q: How much (in grams) of a 17.2-g sample of some radioactive element (half-life of 4 days) remains…

A: The given mass of the substance =  17.2 g The half-life of the substance (t1/2) = 4 days Time…

Q: If the half-life of a radioactive substance is 500 million years and you have 48 atoms of it, how…

A:

Q: If you have a sample of radioactive material that weighs 2 grams, and only 1 gram is left that is…

A: Initial nuclei = 2 grams. Reduced nuclei = 1 grams. Time = 5 years. Half life time of material = ?

Q: A rock constains Pb-206 to U-238 mass ratio of 0.245: 1.00. Assuming the rock did not contain any…

A:

Q: If you are given a sample of 14 g of a radioactive substance and waited for 4 half-lives to pass,…

A:

Q: Complete the table for the radioactive isotope. Isotope 239Pu, Half Life (In years) 24100, Initial…

A: Radioactive decay reactions are first order reactions. Nt = Noe-λt        (equation1) No - Initial…

Q: Complete the missing information in the reactions. Then, label the type of nuclear reaction. 14 e +…

A:

Q: The beta decay of cesium-137 has a half-life of 30.0 years. How many years must pass to reduce a 25…

A: We have given that The beta decay of cesium-137 has a half-life of 30.0 years. How many years must…

Q: the Cs-131 by life has a half life of 30 years. after 120 years, 2.6 g remain. what is the original…

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Q: What percentage of a radioactive sample remains after 3 half-lives? O 25% O 12.5% O 6.25% O 3.125%

A: No of half lives=3 Percentage of radioactive sample=?

Q: The half-life time of a radioactive element is 6.0 days. A sample of 50.0 g of this element is…

A:

Q: A radioactive element decays at such a rate that after 15 minutes, only 1/10 of the original armount…

A: We will iae intergrated rate equations for first order kinetics to solve this question.

Q: Consider a certain type of nucleus that has a half-life of 32 min. Calculate the percent of original…

A: Given: The half life, (t1/2)=32 min. The time of disintegration , (t)=1.9 hrs=(1.9*60)=114 min.…

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: Half life iridium 192 is 106.51 days. How many days are required for 60 mg to decay to 7.5 mg

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Q: Lead-204 has a half-life of 15 minutes. Suppose there are initially 100 Pb-204 atoms. After 30…

A: The time in which half of the initial amount of the reactants convert into the product known as half…

Q: radioactive sample originally contains 8.0g of an isotope with a half- life of 6 days. What is the…

A:

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 nuclear reaction shown below is an example of what type of process? 224. Th 90 220 4 Не Rn + 2.…

A:

Q: 3. Radioactive material is known to decay at a rate proportional to the amount present. Initially…

A:

Q: A radioactive material decays at a rate proportional to its amount. If the material has a half-life…

A: To solve this question, first find out rate constant using half life and then use that to find out…

Q: 145 g sample of radioactive has a half live of 6.4 days how many g of material is left are 2 half…

A: The time required to disintegrate the molecule to half of its initial concentration is called the…

Q: The half-life of Radium-221 is 30 seconds. Suppose we have a 320 g sample. (7.1) Find a formula for…

A: Given: Half-life of Radium-221 = 30 s The initial mass of the sample = 320 g We have to find the…

Q: Carbon-14 has a radioactive half-life of about 6,000 years. If an organism has 10 g of carbon-14 in…

A: Provided half life (t1/2)=6000year Also, provided time(t)=6000year Initial amount (A•)=10g of…

Q: Radioactive decay can produce a number of different particles. Which decay particle has a positive…

A: Using characteristics of alpha , beta and gamma particles.

Q: A radioactive sample contains 2.45g. How much willl remain after 11.4 days? (Half life is 3.8 days)

A:

Q: If the half-life of a radioactive substance is 4 days how much material will remain after 16 days if…

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Q: The radioactive isotope Ga decays by electron capture. If the mass of a sample of gallium-67 decays…

A: According to the integrated rate law for the first-order reaction, the concentration of reactant is…

Q: A sample of radioactive radon-222 was found to have a half life of 3.823 days.  What fraction of…

A: All natural and artificial radio active decays follows first order kinetics  The integrated rate…

Q: The half-life of bismuth-212 is 1 hour. If 12g of bismuth are allowed to decay, what mass of bismuth…

A: The time taken during a reaction to reduce the concentration of a reactant to half of its initial…

Q: A radioactive isotope has a half-life of 46.3 minutes. how long will it take for the radiation from…

A:

Q: Cobalt-60 is a beta emitter with a half life of 5.3 years. Approximately what fraction of cobalt-60…

A:

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: Cobalt-60 is used extensively in medicine as a source of g-rays. Its half-life is 5.27 years. What…

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Q: 1. Gold-191 has a half life of 12.4 hours. What mass of this isotope would remain after 49.6 hours…

A:

Q: Polonium-210 is a radioactive substance with a half-life of 138 days. If a nuclear facility is…

A: