Hydrogen-3 is radioactive and has a half life of 12.3 years. Calculate the activity of a 3.4 mg sample of hydrogen-3. Give your answer in becquerels and in curies. Round your answer to 1 significant digit.

Q: Cobalt-60 is radioactive and has a half life of 5.26 years. Calculate the activity of a 9.7 mg…

A: Given mass of sample = 9.7mg = 0.0097g  Molar mass of Cobalt-60 = 60g/mol  Half life of reaction =…

Q: Iodine-125 is radioactive and has a half life of 60.25 days. Calculate the activity of a 4.2 mg…

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Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. Calculate the activity of a 6.3 mg…

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Q: lodine-125 is radioactive and has a half life of 60.25 days. Calculate the activity of a 1.0 mg…

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Q: Radon-220 undergoes alpha decay with a half-life of 55.6 s. Assumethere are 16,000 atoms present…

A: We will be using the formula which related number of atoms  remaining after a given number of half…

Q: Iodine-125 is radioactive and has a half life of 60.25 days. Calculate the activity of a 5.2 mg…

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Q: Bromine-88 is radioactive and has a half life of 16.3 seconds. Calculate the activity of a 4.7 mg…

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Q: A sample of tin contains 10.00 micrograms of tin-123.  Determine the activity of the sample in…

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Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

A: Half life, t1/2 = 32 hours t1/2=32 hoursk = 0.693t1/2=0.69332 hours=0.02166 hour-1

Q: Radon, one of the noble gases, is a decay product of uranium is itself radioactive, with a half-life…

A: Here we are asked to write the nuclear equation for the alpha decay ofRn-222

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: 9. Radon-222 has a half-life of 2.8 days. How many half-lives will pass after 28 days? O 19 10 15 05

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Q: Cobalt-60 is radioactive and has a half life of 5.26 years. Calculate the activity of a 2.8 mg…

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Q: Cesium-137 is radioactive and has a half life of 30. years. Calculate the activity of a 5.0 mg…

A: Here we are required to find the activity of 5mg of radioactive sample of Cs-137.

Q: Indium-116 is radioactive and has a half life of 14.10 seconds. Calculate the activity of a 5.7 mg…

A: activity of radioactive substance is proportional to number of radioactive particles. λ = 0.693 /…

Q: Strontium-90 is radioactive and has a half life of 28.8 years. Calculate the activity of a 5.4 mg…

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Q: Bromine-88 is radioactive and has a half life of 16.3 seconds. Calculate the activity of a 1.3 mg…

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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: Suppose the amount of a certain radioactive substance in a sample decays from 9.40mg to 5.40mg over…

A: Radioactive decay is the first order decay. the formula for calculation of radioactive decay as…

Q: c) Madame Curie filled glass vials with pure radon, produced by her radium, for use in hos- pitals.…

A: Given: Hal-life of Radon = 3.8 days Initial activity of Radon = 1 MBq

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

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Q: Indium-116 is radioactive and has a half life of 14.10 seconds. Calculate the activity of a 2.3 mg…

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Q: Tin-129 is radioactive and has a half life of 2.23 minutes. Calculate the activity of a 1.2 mg…

A: Given  Half-life of Tin-129 = 2.23 minutes = 2.23 x 60 = 133.8 seconds Mass of the sample = 1.2 mg =…

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: Tin-129 is radioactive and has a half life of 2.23 minutes. Calculate the activity of a 7.8 mg…

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Q: Uranium-238 undergoes eight consecutive a-emissions to give stable lead. In an uranium ore sample,…

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Q: The half-life of Po-214 is 0.001 seconds. How much of a 10 gram sample is left after 0.003 seconds?…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

Q: 3 Carbon-14 has a half life of about 5,730 years. If an archeologist examines a bone and finds 6.25%…

A: Given :  Half life of C-14 = 5730 years  % of C-14 = 6.25 %

Q: Radium-226 is radioactive and has a half life of 1600. years. Calculate the activity of a 2.1 mg…

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Q: The carbon-11 isotope has a half-life of 20.3 minutes. How long (in hours) will it take for 99.9999%…

A: Here we have to determine time required for 99.9999% of a carbon-11 sample to disappear.Given half…

Q: Indium-116 is radioactive and has a half life of 14.10 seconds. Calculate the activity of a 3.3 mg…

A: Here we are required to find  the activity of 3.3mg of radioactive indium 116 in the unit of Ci and…

Q: 6.) Cesium-134 undergoes decay by B emission and has a half-life of 2.0 years. How much of a 3.50-g…

A: Given:                 Half life of Cesium-134 is 2.0 years                 Taken mass of Cesium-134…

Q: A sample of an alpha emitter having an activity of 0.20 Ci is stored in a 29.8 mL sealed container…

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Q: What is the activity of a 28.3 µCi sample of carbon-14 in becquerels?

A: 1 Curie = 3.7 × 10^10Bq

Q: 1. Radon-222 has a half-life of 3.8 days. How many half-lives will pass after 38 days? O15 19 5 10

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Q: Iodine-131 is radioactive and has a half life of 8.04 days. Calculate the activity of a s.8 mg…

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Q: 5) Bismuth-210 has a half-life of 5 days a) A sample originally has a mass of 800 mg. Find the…

A: All radioactive disintegrations are first order reactions. For a first order reaction, half-life is…

Q: Phosphorus-32 is radioactive and has a half life of 14.3 days. Calculate the activity of a 6.3 mg…

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Q: Bromine-88 is radioactive and has a half life of 16.3 seconds. Calculate the activity of a 4.8 mg…

A: Half life of first order reaction -is the time required for the reactant concentration to fall to…

Q: Hydrogen-3 is radioactive and has a half ife of 12.3 years. Calculate the activity of a 3.2 mg…

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Q: Complete the table shown to the right for the​ half-life of a certain radioactive substance. ​…

A: Solution - Decay rate - The decay rate of a radioactive substance is characterized by the following…

Q: Cobalt-60 is radioactive and has a half life of 5.26 years. Calculate the activity of a 3.2 mg…

A: Given : We have to calculate activity in curies and Bq.

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. Calculate the activity of a 1.9 mg…

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Q: Cobalt-60 is radioactive and has a half life of 5.26 years. Calculate the activity of a 6.1 mg…

A: SOLUTION: Step 1: Half-life of Co-6o is t1/2 = 5.26 years 5.26× 365×24×60×60 = 16.59 ×107 sec.

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

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Q: The half-life of thorium-243 is 24 days. If a sample contains 8 units, how much will remain after…

A: All radioactive decay follow first order kinetics.

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 4.00g of P, how many grams will remain…

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