A sample of niobium contains 2.50 micrograms of Nb-95.  Determine the activity of the sample in millicuries? [Half-life and atomic mass data can be found in the reference table linked in Question-0.] Half-life= 34.991 d Atomic Mass = 94.90683101 Answer:___ millicuries

Q: D. The half-life of 210Pb is 21 years. How old is a painting in which the activity of 210Pb activity…

A: Calculation

Q: A dinosaur remain has a C-14 isotope and has a half-life of 5,715 years. The activity of this is…

A:

Q: What is the half-life of bismuth-214 if 62.5 minutes are required for the activity of a sample of…

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Q: While exploring a coal mine, scientists found plant fossils which had been preserved by an…

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Q: The carbon-14 activity of an artifact from a burial site was 9.2 min'gl. The half-life of carbon-14…

A: The C-14 decay reactions are first order reactions. Since we know that the relationship between the…

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A: we have to calculate mass of radium-226 remaining after 8000 years  Sign of the values R and S

Q: One of the radioactive isotopes used in medical treatment or analysis is iron-59. The half-life of…

A: Radioactive decay obeys first order decay kinetics   At=Aoe0.693t12×twhereAt= final activityAo=…

Q: View Policies Current Attempt in Progress Strontium-90, a beta emitter, has a half-life of 28.1 yr.…

A:

Q: A sample of rock was found to contain 8.3 mg potassium-41 and 0.48 mg of cacium-41. Calculate the…

A: GivenHalf Life of potassium = 4.1×10^10 yrsSample of rock contains 8.3mg of potassium+ 0.48mg of…

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

A:

Q: An old piece of wood has a carbon-14 content of 0.0156 times that 14 is the age of the old wood if…

A: We will use first order kinetics formula

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

Q: 40K decays to 40Ar with a half life of 1.27x10^9 years. What is the age of a rock in which the…

A: Recall the expression of remaining amount due to radioactive disintegration Remaining amountA=A∘2nSo…

Q: Gallium-67 is used in nuclear medicine. After treatment, a patient's blood shows an activity of…

A: The objective of this question is to determine the time it will take for the activity of Gallium-67…

Q: Polonium-208 is an alpha emitter with a half-life of 2.90 years. How many milligrams of polonium…

A: Given that, the Polonium-208 is an alpha-emitter. the half life (t1/2) = 2.90 years We have to…

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

A: Half life of technetium - 99 is = 6 hours.  Let Take a sample of technetium - 99 having number of…

Q: An isotope of cobalt-60, is used in medical therapy. When the radioisotope activity has decreased to…

A: The half-life of cobalt-60 is given as 5.24 years. This means that the radioisotope activity will…

Q: A nuclear technician was accidentally exposed to potassium-42 while doing brain scans for possible…

A: Given, Half life of potassium -42 = 12 hr activity of potassium -42 after 36 hr of exposure = 4.0 μC

Q: What is the half-life of lead-210 if 47.4 years are required for the activity of a sample of…

A:

Q: It takes 32 days for 512 grams sample of element X to decay to final amount of 4grams. What is the…

A: We are asked to calculate the half-life of element X.

Q: 1. A lab tech prepares 50.0 mg of I-123 on Tuesday, how many mg will remain 39 hours later if the…

A:

Q: Chemistry A moisture density guage has radioactive source containing the isotope cs-137 has half…

A: cs-137 has a half life of 30.17 years. The initial activity of the radioactive source is 8…

Q: phosphorus-32 is a radioactive isotope with half-life of 14days. a biochemist has a vial containing…

A: The radioactive isotopes follows the first order reactions, which is dependent upon the…

Q: The half-life of sodium-24 is 15 hr. If a sample initially contains 40. g of sodium-24, how much…

A: Radioactive reactions are First order reactions. Half life of Sodium-24 is 15 hr. Initial…

Q: Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact…

A: Half life for decay of C-14 (t1/2) = 5.73 × 103 years  Activity due to decay in archaeological…

Q: Give typed solution only The half-life of Ruthenium -97 is approximately three days. If a 450 g…

A: To find out the mass of sample remaining, we need to find decay constant first. Using that decay…

Q: A to 240mg sample of technetium 99M is used for a diagnostic test. if Technetium -99m has a…

A:

Q: Plutonium 240, 240 24PU, has a half life of 6500 years. The new element formed after Plutonium 240…

A: While writing nuclear reaction the sum of mass number on reactant and product side are equal. Same…

Q: A wooden artifact from an Indian temple has a 14C activity of 42 counts per minute as compared with…

A: The question is based on concept of radioactive decay. we have to calculate the age of the wooden…

Q: The half-life of 14C is 5730 years. A sample contains 92.4% of the 14C it would contain if it were…

A: The age of the old fossils can be find out by using carbon dating method.  So the amount of 14C…

Q: The half-life of titanium-51 is approximately 5.76 minutes. How much of a 5 gram sample of…

A:

Q: Heeded for this question. The half-life of the radioactive isotope thallium-210 is 1.30 minutes. How…

A: half-life = t1/2  = 1.30 min initial concentration = ao = 51.3 microgram final concentration = a =…

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: Detail mathematical calculation is shown below

Q: A wooden artifact from a Chinese temple has a ¹4C activity of 24.9 counts per minute as compared…

A: we have to calculate the age of the sample of wooden artifact

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: ⊙ Radioactivity, phenomena follow first order            kinetics                K =2.303t…

Q: A wooden object from a prehistoric site has a carbon-14 activity of 10 counts per minute (CPM)…

A: Given: Half-life = 5730 years [A]=10 cpm [A]0 = 40 cpm

Q: Th-234 has a half-life of 24.1 days. If a 355 mg sample is initially present, how many half-lives…

A: Given  Half life ( t1/2 )  = 24.1 days  Initial amount  = 355 mg  Time ( t ) = 96.4 days  Number of…

Q: Iodine-131 is administered orally in the form of Nal(aq) as a treatment for thyroid cancer. The…

A: We know, radioactivity is an example of first-order reaction.

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A:

Q: 11047Ag → 0.je + 110 48Cd For the nuclear reaction Starting with 200. g of Ag-110 in a container,…

A: Since you have asked multiple question, as per our company guidelines we are supposed to answer the…

Q: A freshly isolated sample of 90Y was found to have an activity of 9.8 x 105 disintegrations per…

A:

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…

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A:

Q: A radioactive material is sampled from a site of leakage. In 2020, the amount of radioactive…

A: Given that, in 2020, the amount of radioactive material left is Ct = 92 mg. Also, given that in…

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A:

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A:

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.