Strontium-89 is a beta emitter with a half-life of 50.6 days that is used in bone cancer treatment. How many days will it take for a 69.6 mg sample of Sr-89 to decay to 0.148 mg?​ (Assume no excretion of the nuclide from the body).

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: Question attached

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

Q: The half life of an isotope is 43 seconds.  How long does it take 100.00 g of that isotope to decay…

A: Given that  Initially weight of isotope sample = 100.0 gm initially number of atoms of isotope No=…

Q: 5. The half life of radioactive 32P is 14.3 days. How long does it take for 100 mg of this isotope…

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Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

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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: 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: Radium 223 decays with a half life of 11.4 days. How long will it take for a 0.240mol sample of…

A: Half life of radioactive elements is given by    t1/2 =0.693λ      λ = disintegration constant.…

Q: How many days will it take for a radioactive isotope with a half-life t1/2 = 134 days to decay to…

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Q: A sample of TI-201 has an initial decay rate of 5.88 x 10' dis/s. How long will it take for the…

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Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A: Data given,  Half-life period of 137Cs, t1/2 = 30.2 years Initial amount, No = 100.0 g Amount left,…

Q: The nuclide 19O, prepared by neutron irradiation of 19F, has a half-life of 29 s.(a) How many 19O…

A: Radioactive decay follows first order kinetics.

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: The half life of an isotope is 43 seconds. How long does it take 100.0g of that isotope to decay to…

A: Half life = 43 second k = 0.693half life= 0.69343 sec=0.016 s-1

Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A: Given half life = 30.2 years initial Concentration = 100 g Concentration at time t = 0.900 g

Q: Radioactive tungsten-178 decays with a half-life of 21.6 days. (a) What is the value of k in s-12…

A: Given: The half-life of tungsten-178, t1/2 = 21.6 days Seconds in a day are given as: 1 day =…

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: Radium-223 has a half-life of 11.43 days. How long will it take for 80% of a sample of the said…

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Q: 8. Radioactive Iodine-131, with a half-life of eight days, is a common fission product and thus is…

A: The expression for the first order radioactive decay is shown below: Where; t = time A0 = initial…

Q: a substance with a half-life of 23.1049 seconds. you start with 12 mg of the substance (a) write the…

A: The decay of substance follow exponential rule. Half life is defined as the time required by any…

Q: 24 Am is used in many home smoke alarms. It has a decay half-life of 457 years. How long does it…

A: All radioactive decay follows first order kinetics. So in order to solve for the time required we…

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)?

A:

Q: 2. The isotope cesium-137 has a half-life of 29.75 years. How long will it take a 100 gram sample of…

A: First-order reaction: The type of reaction which depends only on one substance is called a…

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

A:

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…

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Q: Potassium-40 decays to argon-40 with a half-life of1.27x109 yr. What is the age of a rock in which…

A: Half-life: It is defined as the time required for a quantity to reduce half of its initial value.…

Q: One of the nuclides in spent nuclear fuel is U-235, an alpha emitter with a half-life of 703…

A: The relationship between the decay constant and the half-life period is given below.

Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A:

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: PET scans require fluorine-18, wich is produced in a cyclotron and decays with a half-life of 1.83…

A: Given data,Half life(t1/2)=1.83hoursSpeed=60.0miles/hrLet initial concentration of F-18 be 100Final…

Q: NUCLEAR REACTIONS Nickel-56 decays with a half-life of 6.075 days. 1. Write the balanced nuclear…

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Q: 3. What is the half-life of a 100.0 g sample of nitrogen-16 that decays to 12.5 g of nitrogen-16 in…

A: Given: Initial mass of nitrogen-16 (N0) = 100g Final mass of nitrogen-16 (N) = 12.5g Time (t) = 21.6…

Q: Radioactive tungsten-178 decays with a half-life of 21.6 days. (a) What is the value of k in s"17…

A: Answer-a Relation between half life and decay constant is: λ=0.693t1/2 value of half life given is…

Q: The isotope cesium-137 has a half-life of 29.75 years. How long will it take a 100 gram sample of…

A: Radioactive decay reactions are first order reactions. The calculation can be done using first order…

Q: The isotope 208Tl undergoes β decay with a half-life of 3.1 min.  How many minutes will it take for…

A:

Q: 3. 137Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A:

Q: A substance X initially weights 56 grams. After 6 minutes, it was observed that its mass decreased…

A: Mass at starting (t=0) = 56 grams Mass after 6 min = (56-12) g                                = 44 g…

Q: 1. Gold-198 is used in the diagnose of liver problems. The half-life of Au is 2.69 day. If you begin…

A: Given data: half life of 198Au = 2.69 day Initial concentration of  198Au is 2.8 μg Time = 10.8 day

Q: Radium 223 decays with a half life of 11.4 days. How long will it take for a 0.240mol sample of…

A: Half-life of Ra-223 = 11.4days Mass of Ra-223 = number of moles of Ra-223 × Molar mass of Ra-223…

Q: The half-life of stroncium-90 is 28 years. How long will it take a 50-mg sample to decay to a mass…

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Q: A theoretical isotope known as Du-30 has a half life of 6 months. The amount decreased from 1.50M to…

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Q: 137Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A: Since you have posted multiple independent questions in the same request, we will solve the first…

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: Zinc-62 decays with a half-life of 9.186 hours. 1. Write the balanced nuclear reaction of Zn-62 as…

A: As per the rules, only three sub-parts can be answered:

Q: Ca-60 is used extensively in radiotherapy, its half-life is 5.27 years. How many years will it take…

A: The given data is as follows: The half life Co-60 = 5.27 years The initial amount A∘= 100 The left…

Q: If 2.4 x 1010% of the atoms of a radioactive isotope disintegrate in 1.0 yr, what is the decay…

A: Since for the decay reaction, the relationship between the final % and initial % is given by…

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.