calculate the mass of plutonium-238 remaining after 350.0 years.

Q: How long will it take a radioactive sample of iodine-131 (half-life 8.07  d ) to lose 99.2  %  of…

A: The given disintegration reaction is first order reaction. Half life t1/2 = 0.693 / K 8.07 days =…

Q: Carbon-14 (C-14) is a radioactive isotope with a of 5,730 years. It decays to stable through beta…

A: The main use of C-14 is for dating purposes that is determining the age of buried organic materials…

Q: The half-life of radium-226 is 1.60X10³ yr. How manyhours will it take for a 2.50-g sample to decay…

A: Given :  t1/2 = 1.60 x 103 yr , [A0] = 2.50 g , [At] = 0.185 g Half-life : The time taken by any…

Q: 5) Uranium is radioactive and decays into lead. This process can be used to date rocks. A piece of…

A: Amount of Uranium in the rock = 3.8 x 10-3 g Amount of lead in the rock = 2.4 x 10-5 g Half life of…

Q: Uranium is radioactive and decays into lead.  This process can be used to date rocks.  A piece of…

A: This problem is based on nuclear chemistry. We know radioactive decay follows first order chemical…

Q: Beginning with 1.00 g of a sample of an unknown radioactive isotope, 0.05674 g of the isotope will…

A: The answer to the following question is-

Q: One of the stable isotopes of Mg is Mg-24 What is the atomic number of Mg   Enter whole number only…

A: Given  isotope of Mg -24  a) Atomic number is defined as the number of protons present in the…

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: How long will it take for 15% of the U-238 atoms in a sample of U-238 to decay? Express your answer…

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Q: The half-life of Uranium-238 is approximately 4.5(10°) years. How much of a 10 kilogram block of U-…

A: Given data :- Half life = 4.5 x 109 years mass of uranium = 10 kg

Q: Age of the Earth. Suppose that at the formation of the Earth there were equal amounts of 235U and…

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Q: What is the half-lifeof radioactive element?

A: Breaking down of atomic nuclei of any radioactive substance gives the radiative emissions from…

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

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Q: A 54.5 mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0…

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Q: Radioactive tungsten-178 decays with a half-life of 21.6 days. (a) What is the value of k in s-1?…

A: a) we have  half life of W - 178 = 21.6 days = 21.6 * 24 hours = 518.4 hours = 518.4 * 3600 seconds…

Q: The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 × 10 years. Suppose…

A: The half-life is  .The initial amount is .The final amount is .To find the age of the rock.

Q: The isotope 185Hf undergoes B decay with a half-life of 3.50 min. (a) What isotope is produced by…

A: All radioactive decay process follow 1st order kinetics.

Q: See picture

A: We have to estimate the age of the fossile.

Q: How much of a 0.15 g sample of U-238 after the passage of 3200 years? Half-life is 4.01x10° vears.

A: To determine the amount of 0.15 g radioactive substance left after 3200 years if the half-life is…

Q: The half life for the decay of carbon-14 is 5.73 × 10° years. Suppose the activity due to the…

A: Given: Half-life of carbon-14 decay = 5730 years. Activity of carbon-14 in the sample = 51 Bq. And…

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: Radon 222 is a radioactive substance which undergoes radioactive decay Here we are required to find…

Q: Question 1:  If the reaction is zeroth order or second order, you can not calculate the half life.…

A: We need to explain why if the reaction is zeroth order or second order, we can not calculate the…

Q: 1. Rubidium-87 is a radioactive isotopes ocurring in natural rubidium. The decay constant is…

A: 1- We will determine first the half life in second unit :  We know that, Half life equation for…

Q: One of the radioactive isotopes used in medical treatment or analysis is palladium-103. The…

A:

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: Given -> Half life = 3.82 days

Q: The half life for Carbon-14 is 5730 years. Calculate the amount of time it would take 60.0 g of…

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Q: The half life of a radioactive iodine is 8 days. How long will it take for 0.25 g of radioactive…

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Q: .Strontium-90 is one of the products of the fission of uranium-235. This strontium isotope is…

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Q: Cesium-137 undergoes beta decay and has a half-life of 30.0 years. Determine the number beta…

A: The rate of the reaction is referred to as the change in the molar concentration in a distinct…

Q: Americium-241 is widely used in smoke detectors. The radiation released by this element ionizes…

A: Given,  Mass of Am-241 = 5.00 g.  Half life of Am-241 = 433 years.  Here, we have to calculate…

Q: A scientist has a 1.2-g sample of pure strontium-91,  9138Sr. The half-life of strontium-91 is…

A: Given, mass of sample = 1.2 g half life , t1/2=9.70 h

Q: The natural abundance of 14C in the earth's atmosphere and all living organisms is approximately…

A: Given, The half-life of C14 =t12= 5730 years The rate constant and half-life are related to each…

Q: The half-life of carbon-14 is 5,730 years. Write the exponential decay function and find k. If the…

A: Half life:It is represented by the symbol t1/2. It was discovered by Rutherford. It is defined as…

Q: Cobalt-60 is commonly used as a source of beta-particles. How long does it take for 87.5 perxent of…

A: The decay reactions first order reactions. Since we know that the relationship between the amount of…

Q: Which example is an enodthermic process? O producing sugar by photosynthesis O formation of snow in…

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Q: Chemistry An unknown radioactive substance has a half-life of 3.20 hourshours . If 34.7 gg of the…

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

Q: The half-life of radioactive chromium-51 is 28 days. If a sample of chromium-51 has a mass of 12.0…

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Q: Radioactive rhodium-99 decays with a half-life of 16.1 days. (a) What is the value of k in s-¹? -1…

A: Answer:Nuclear reactions are the first order reactions in which decay of radioactive material takes…

Q: Ruthenium-106 (106Ru) is used to treat melanoma in the eye. This isotope decays by β– emission with…

A: Radioactive decay is identified as a process during which an unstable nuclide of an atom changes to…

Q: "Pu nat fraction of pre

A:

Q: Q represent a mass (in grams) of carbon , whose half-life is  5715 years. The quantity of 1 carbon…

A: Given , Half life of carbon = 5715 years

Q: Uranium is radioactive and decays into lead.  This process can be used to date rocks.  A piece of…

A: Given that Amount of Uranium in the rock = 3.8 x 10-3 g Amount of lead in the rock = 2.4 x 10-5 g…