The half-life for the first order radioactive decay of 14C is 5730 years. An archeological sample contained wood that had only 69% of the 14C found in living trees. What is its age

Q: Carbon Dating: Carbon-14 commonly used for dating historical artifacts, is a radioactive isotope…

A: Radioactive decay follows first order kinetics.  We know that k = 0.693/t(0.5) ...(1) k = rate…

Q: (B) The Carbon-14 activity of an artifact in a burial site was found to be 8.6 counts per minute per…

A:

Q: Radioactive substances decay by first-order kinetics. How many days would be required for a sample…

A:

Q: Consider the radioisotope 235U (half life = 7.04 × 108 years). What is the first order rate %3D…

A: Given, the half-life of U235 = 7.04 × 108 years We have to calculate the first-order rate constant…

Q: If a radioactive isotope has a rate constant for decay of 0.0650 min–1, what fraction of this…

A: Given data,Rate constant(k)=0.0650min-1Time(t)=13.5minFrom the unit of rate constant we can tell…

Q: How many days will it take to reduce the original amount of 222Rn to 1/128th its original size?…

A: Since the decay reactions are first order reactions Hence we can say two things about them  1) Half…

Q: A sample of organic origin was tested to determine its approximate age. About 63%of its C-14 had…

A: We have to predict the age of sample.

Q: The radioactive isotope of lead , Pb-209, decays at a rate proportional to the amount present at…

A: Given information: Half-life = 3.3 hours Amount decayed = 90%

Q: A sample of corn from an extinct civilization has a decay rate of 9.5 decays per minute per gram of…

A: Given data,Initial Decay rate=9.5min-1g-1Decay rate in atmosphere=15min-1g-1K=1.21×10-4year-1

Q: Consider the radioisotope ²²⁶Ra (half life = 1.60 × 10³ years). What is the first order rate…

A: Using the formulas of first order kinetics we can solve this problem.

Q: The​ half-life of a radioactive substance is 50 years. If you start with some amount of this​…

A: Suppose we start with 1 gram of the sample. Therefore--- Initial amount (N0) = 1 g The half-life…

Q: The half-life of Po-216 is 0.16 s. How long would it take to reduce a sample of it to the negligible…

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

Q: The half-life for the (first-order) radioactive decay of 14Cis 5730 a (1 a is the Sl unit 1 annum,…

A: Given that : Half-life of first order reaction = 5730 year Age of wood =?

Q: The radioactive isotope tritium decays with a first-order rate constant k of 0.056 year 1. What…

A: First order reaction is defined as the chemical reactions whose rate only depends on the reactant…

Q: Calculate the rate constant for the beta decay of the carbon-14 isotope and calculate the half-life…

A:

Q: The half-life of Pxygen-15 is 2 minutes. What fraction of the sample will remain after 10 minutes…

A:

Q: What is the half-life of a sample if after 40 years 12.5g of an original 0.4kg sample is left?

A: Given that,  Initial mass of sample = 0.4 kg = 400 g  Mass of sample left after after 40 years =…

Q: The half-life of 32P is 14.3 days. You count a sample containing 32P and obtain 32,450 cpms. You add…

A: Radioactivity refers to spontaneous disintegration of a substance on itself. The radioactivity of a…

Q: A sample of corn from an extinct civilization has a decay rate of 9.5 decays per minute per gram of…

A: First-order reaction:Radioactive decay follows first-order kinetics. The rate of the first-order…

Q: The half-life for the first order radioactive decay of lodine - 131 is 8.0 days. After 3 half lives,…

A: Given, Half life for the first order radioactive decay of iodine-131 = 8.0 days After 3 half lives…

Q: If 25.35 grams of radioactive waste reduces to 9.75 grams of radioactive waste after 1350 years,…

A: Given, time = 1350 years  Half life , t1/2 = ?

Q: 8) The half-life for the (first order) radioactive decay of "C is 5730 years. An archaeological…

A: Answer: Data given- half-life for radioactive decay  of 14C is 5730 yrs. 70% of the 14C found in…

Q: Consider the radioisotope "Ca (half life = 1.03 × 105 years). What is the first order rate constant…

A: Rate constant is 6.73 x 10-6 yr-1

Q: A radioactive substance undergoes decay as follows:  Time (days) Mass (g) 0 500 1 389 2 303 3 236 4…

A:

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

A:

Q: Deoxyglucose labeled with fluorine-18 is commonly used in PET scans to locate tumors. Fluorine-18…

A:

Q: The radioactive nuclide 170Ta undergoes first-order decay with a half-life of 6.76 min. If a…

A:

Q: RADIOACTIVE NUCLIDE 1 2 3 INITIAL AMOUNT 75.900 g 1.00 kg (f), in mg FINAL AMOUNT 25 mg (d), in ug…

A:

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

A: Half-life is the time taken for the reactant to reduce the amount of the isotope to half its initial…

Q: the half-life of the antidepressant Prozac in an average man is 2 days. how long in days does it…

A: The half-life of the antidepressant Prozac in an average man is = 2 day The time required for the 95…

Q: The age of wine can be determined by measuring the trace amount of radioactive tritium. Tritium is…

A: Radioactive decay follows first order kinetics. Tritium is a radioactive isotope of hydrogen and…

Q: If a radioactive isotope has a rate constant for decay of 0.0650 min–1, what fraction of this…

A:

Q: Consider the radioisotope 226Ra (half life = 1.60 x 10' years). What is the first order rate…

A: Given the question in half life of Ra is 1.60×103 years.  Calculate the rate constant of first order…

Q: Copper(II) acetate containing copper-64 is commonly used to study brain tumors. This isotope has a…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) or rate constant and…

Q: The half-life of technetium-99 is 6.0 hours. How much of a 50.0 mg sample will remain after 24…

A: Given,  Half-life period of technetium-99 = t1/2 = 6.0 hours  Initial concentration = N0 = 50.0 mg…

Q: The 1st-order decay of a particular radioactive element has a half-life of 1.234 days. How many…

A: Given information, Half-life = 1.234 days Time (t) = 5.67 days Initial mass = 891.0 grams

Q: what is the half-life of plutonium-239 if it takes 14 098 years for 33% of a given sample to decay

A: Radioactive decay follows the first-order kinetics. According to the first-order kinetics, the decay…

Q: Iodine-131 is used medically for the diagnosis of thyroid illnesses. The rate constant for the decay…

A: Given, Decay constant(k) = 8.66×10-2 /day Initial amount = 0.25 mg Time = 120 hrs = 5 days As we…

Q: The half life for the radioactive decay of carbon-14 to nitrogen-14 is 5.73x 10^3 years. Suppose…

A:

Q: A radioactive isotope has a half-life of 14.8 hrs. Calculate its rate constant.

A: Since all the radioactive decays are first order decay reactions

Q: 3H decays to ^3He (Helium) with a half life of 12.32 years. If you start off with 1,000,000 atoms of…

A: In a first-order reaction, the reaction rate is directly proportional to the concentration of one of…

Q: A sample of sodium-24 was administered to a patient to test for faulty blood circulation by…

A: Given that, Half life of sodium24=15 h We have decay constant, k=0.693t12..............1 we have an…

Q: An ancient shroud is found to have a C-14 activity of 9.7 disintegrations per minute per gram of…

A: Given that : The initial decay rate of carbon of cloth = 9.7 dis/min. The decay rate of carbon for…

Q: 47. If 25 mg of an initially 200. mg sample of bromine-74 is still active after 75 minutes, the…

A:

Q: The radioisotope sodium-24 is used to determine the levels of electrolytes in the body. A 16microg…

A: The term half life can be defined as the time taken by a given quantity to reduce to half of the…

Q: Phosphorus-32 has a radioactive isotope used as a tracer in the liver. The half-life of…

A: All radioactive decay reactions follow first order kinetics Given  Half life of Phosphorus-32 (t1/2)…

Q: The half-life of the radioactive isotope 137Cs is 30.17 years. How long does one have to wait until…

A:

Q: half-life of 44,495 days. How many grams of iron-59 decompose after one month (assume it is in…

A: We will use first order kinetics formula to get final mass of compound

Q: An isotope of the element erbium has a half-life of approximately 12 hours. Initially there are 9…

A: Since the decay reactions are first order reactions. And since we know that the relationship between…

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.