1.Write the nuclear equation for the radioactive decay of radium-226 by alpha decay.

Q: The half-life of nucleus Rn-222 is 3.88 days. How many mg of a 5000 mg sample of Rn-222 remains…

A: The half life of a given reaction refers to the time required by a given compound to reduce to half…

Q: Question attached

A: Given:-               The first order reaction formula is: Half life T12 = 13.27 hours…

Q: In addition to C-14, K-40 is often used for archeological dating. K-40 decays to Ar- 40 by positron…

A: The rate of radioactive decay has been proven to be of first order kinetics. Using the understanding…

Q: Co-60 is used extensively in radiotherapy as a source of y-rays. Its half life is 5.27years. a) How…

A: half life = 5.27 years

Q: Iodine -125 emits gamma rays when it decays to Tellerium -125 and has a half life of 60 days. If…

A: Given, half life of Iodine -125 t1/2 = 60 days            initial mass of Iodine -125 = 0.020 g The…

Q: o-60 is used extensively in radiotherapy as a source of y-rays. Its half-life is 5.27 years. a) How…

A: Elements which are not stable gain stability by emitting rays, this type of elements are called…

Q: Iron-59 is commonly used as a source of B particles. How long does it take for 87.5% of a sample of…

A: Radio active decay is an example of 1st order reaction. and for 1st order reaction the rate law is…

Q: Cobalt-60, used in cancer therapy, decays by beta and gamma emission. The decay constant is 4.18 x…

A: Half-life is the interval of time required for one-half of the atomic nuclei of a radioactive sample…

Q: While harder to access, another radioactive isotope of technetium, Tc-93, has a half-life of 2.73…

A: Solution Tc ninety nine m is wide used for diagnostic and therapeutic functions. It emits gamma…

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: How old is a rock if the mineral biotite from the rock has 75,000 40K atoms and 25,000 40Ar atoms?…

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Q: NUCLEAR REACTIONS Zinc-62 decays with a half-life of 9.186 hours. 1. Write the balanced nuclear…

A: Answer: All nuclear reactions are first order reaction therefore integrated rate law of first order…

Q: Thorium, a rare element in the earth's crust, has over seven radioactive isotopes. Of of these Th…

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

Q: A zircon sample contains 4000 atoms of the radioactive element 235U. Given that 235U has a half-…

A: Time required to decay to 125 atoms os given below

Q: A sample of uranium ore contains 5.37 mg of U-238 and 2.52 mg of Pb-206. (a) Calculate the…

A: Given mass of U-238 = 0.00537 g Number of moles of U-238 = 0.00537/238 = 2.26 × 10-5 mol Given mass…

Q: The half-life of uranium-238 is 4.5 billion years. What is the decay constant for uranium-238? A)…

A: The nuclear reactions are of first order reaction and its half-life is nothing but the amount of…

Q: NUCLEAR REACTIONS Zinc-62 decays with a half-life of 9.186 hours. 1. Write the balanced nuclear…

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Q: The half-life of a radioactive isotope is 13 seconds. How long does it take for 100 mg of the…

A:

Q: Iodine – 125 emits gamma rays when it decays to Tellerium-125 and has a half-life of 60 days. If a…

A: The radioactive decay always follows the first order kinetics. The radioactive decay of I-125 must…

Q: A hepatobiliary scan is a common technique used to assess the functionality of a patient's…

A:

Q: How long would it take for the amount of u-235 to reach 1/8 of its initial amount? One of the…

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Q: In medical application prior to having an MRI, a patient will be administered a dye containing a…

A:

Q: If 18.9% of a sample of zinc-65 decays in 73.5 d, what is the half-life of this isotope (in days)?

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Q: 14C decays to 12C with a half-life of about 5,700 years. Suppose you find a fossil in which the…

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

Q: lodine - 125 emits gamma rays when it decays to Tellerium-125 and has a half-life of 60 days. If a…

A:

Q: Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k ins? b. A…

A: Radioactive decay is a spontaneous process. Radioactive decay is a first order reaction. Thus its…

Q: The half-life of nucleus Rn-222 is 3.88 days. How many mg of a 5000 mg sample of Rn-222 remains…

A: Given, half-life of nucleus is 3.88 days.  The half-life can be calculated by the expression given…

Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A: Answer: Given data: t1/2=14.3dayst=33.0days Mass of sample m=188mg

Q: Strontium-90, a beta emitter, has a half-life of 28.1 yr. If 29.1 mg of 90Sr were incorporated into…

A:

Q: Archaeologists used pieces of burned wood, or charcoal, found at the site to date prehistoric…

A: Given data is as follows: The initial amount of C-14, A° = 100 The amount left after time "t" , A=…

Q: 44 of 48 If the half-life of a radioisotope is 3 years, the radioactivity remaining in a sample of…

A: (a) the half life is 3 year, Now, amount of sample remaining after 6 years is, 6 years means 2 half…

Q: If a tree dies and the trunk remains undisturbed for 1.775 × 10⁴ years, what percentage of the…

A: Given-> Half life = 5730 year  Time = 1.775 × 104 year.

Q: What is the half-life of an isotope that decays to 3.125% of its original activity in 63.6 h?…

A: We know that,  N(t) = N0(1/2)t/t1/2 No = initial amount  N(t) = amount of substance at time t t1/2 =…

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.00 billion years old by…

A:

Q: The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced…

A: The initial mass of the sample of palladium-100, No, in mg is calculated as shown below where t1/2…

Q: Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years. What is the…

A: In general, the radioactive decay follows first-order kinetics. For the first-order reaction, the…

Q: The half-life of Palladium-100 is 4 days. After 20 days a sample of Palladium-100 has been reduced…

A:

Q: ubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years. What is the…

A:

Q: The half-life of radium-226 is 1.8x103 years. How many hours will it take for a 2.50-gram sample to…

A: Interpretation-  To determine how many hours will it take for a 2.50-gram sample to decay to the…

Q: 22) Iodine-123, used in thyroid therapy, has a half-life of 13.27 hours. Iodine-123 decays via a…

A: Given data:  Iodine-123 used in thyroid therapy ,has a half -life =13.27 hours  Iodine -123 decay…

Q: If a tree dies and the trunk remains undisturbed for 1.015 x 104 years, what percentage of the…

A:

Q: Carbon-14 has a half-life of 5730 yearsyears. In a plant fossil, you find that the 14C14C has…

A: Given data:

Q: The decay constant or the beta decay of ^99 43TC was found to be equal to 1.0x10-13/s. What is the…

A:

Q: 3. Natural thorium consists entirely of the alpha-radioactive isotopes 232Th which has a half-life…

A:

Q: 4. The remnants of an ancient fire in a cave in Africa showed a 'C decay rate of 3.9 counts per…

A: The half-life of a reaction is the time taken for the reactant to reduce to half its initial value…

Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A: Mass of  Na₃³²PO₄ = 175 mg  Time of decay t = 54.6 days half life of P-32 = 14.3 days We need to…

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.