What is the activity

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

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Q: To measure the volume of the blood system of an animal, the following experiment was done. A 1.0-mL…

A: Let the volume of the blood be V. The initial total volume of the blood is 1+V. Since the activity…

Q: You have a sample of unknown medication that is radioactive. You believe you should be able to…

A: Given: The initial activity, (A0) = 1.14×106 Bq. The activity after 11.1 hrs, (A) =  6.60×105 Bq.…

Q: Determine the half-life of a radionuclide if after 18 days the fraction of undecayed nuclides…

A: Half-life (t1/2) represents the amount of time at which the concentration of the radioactive nuclide…

Q: Given the emissions and half-lives for the Th-232 series, determine the missing values in the…

A: #1: We are given an incomplete Th-232 series and we have to complete the missing species.

Q: Complete the following nuclear equations and identify X in each case: b) ?1940→ ?−10+? d)…

A: These are nuclear reactions based on total atomic number and masses on both reactant and product…

Q: Samples recovered from an archaeological site are determined to have a 14C activity of 1.3 dpm/g.…

A: Given:   The activity of C-14 from recovered sample is 1.3 dpm/g. The activity of C-14 in living…

Q: The smallest C-14 activity that can be measured is about 0.20%. If C-14 is used to date an object,…

A: Given :          C-14 activity measured is = 0.20% We have to calculate object died within how many…

Q: 3. The half-life of radon is 3.82 days. What fraction of a freshly separated sample of this nuclide…

A: The half-life of a radioactive isotope (t1/2 ): All radioactive decay first-order reaction kinetics.…

Q: 7) Please circle any of the following nuclides are most likely to decay via electron capture: (Yes,…

A: The answer for the above question are as: Explanation:Electron Capture:Electron capture occurs when…

Q: Carbon-14 has a half-life of 5730 years and the radiocarbon activity of wood recently cut down is…

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Q: mammoth skeleton has a carbon-14 decay rate of 0.0077 disintegration per second per gram of carbon.…

A: We need to find out how long ago the mammoth lived.  We are given the carbon-14 decay rate i.e.…

Q: 60Co has a half-life of 5.27 yr. What percentage of its original activity will a sample of 60Co have…

A: Dear student,I am providing solution for Q.1 that you have asked as we are entitled to do one…

Q: Cobalt-60 is a beta-emitter used in radiation cancer treatment equipment in hospitals. What total…

A: Given Initial mass = 24 g half life = 5.33 years time = 16 years

Q: Complete the nuclear equation of the B- of Ca. 20

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Q: initial activity of the sa

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Q: The half life of 52Fe is 8.28 hours. Suppose we measure the activity of a sample containing 52Fe and…

A: Calculation of disintegration constant (λ):T1/2 of 52Fe is = 8.28 hours.

Q: If radium-223 has a half-life of 10.33 days, what time duration would it require for the activity…

A: Here we are required to find the time for  activity of the  sample to decrease 1.5% of its present…

Q: O nuclear fission

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Q: A wooden object from an archeological site is subjected to radiocarbon dating. The activity due to…

A: To determine the age of the archaeological sample, we can use the formula for radioactive decay:

Q: Radioactive isotopes used in cancer treatment have a shelf life simply because the active nuclei…

A: Answer :-  The source is barely (just) usable.…

Q: Complete the following nuclear equations and identify X in each case: a) ?53135→ ??54135+? c)…

A: Nuclear reaction: A nuclear reaction must cause a transformation of at least one nuclide to another.…

Q: The half-life of Carbon14 is 5730years. The carbon 14 activity of the living thing material is…

A: Given: Initial activity of carbon = 920 decays/hr.g of C. Final activity of carbon in sample = 680…

Q: The nuclide 131I undergoes beta decay with a half-life of 8.041 days. Large quantities of this…

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Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.20 billion years old by…

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Q: The half life of Pa-234 is 6.75 hours. What fraction of a sample of this isotope remains after 27…

A: The half-life period of radioactive elements can be expressed as: λ=0.693t1/2

Q: Krypton-87 has  a rate constant of 1.5 * 10-4 s-1. What is the activity of a 2.00 mg sample?

A: The activity of a sample of radioactive matter is defined by the number of disintegrations taking…

Q: What is the activity (in Bq) of a sample of Cs-137 if 12.1 years ago it was recorded to have an…

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Q: A wooden artifact is burned and found to contain 21 g of carbon. The 14C activity of the sample is…

A: The explanation is given below-

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.