The half life of the decay process of 238?238U to 206??206Pb is 4.5x109 yr.   A laboratory investigation shows that a sample of uranium ore contains: 0.0225 mmols of 238?238U 0.0125 mmols of 206??206Pb Calculate the age of this sample of uranium ore including all units.

Q: Uranium -238 decays in a series of steps to Pb-206. When the material is very old, one can treat the…

A: Radioactive decay follows 1st order reaction.  Given the half-life, t1/2 = 4.50*109 yr

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 6.00g sample of Iodine-131 decays until there is only 0.75g of Iodine-131 remaining. How much time…

A: Given data:

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…

Q: if the passing of five half -life leaves 50.0g of a of radioisotope sample, how much was present in…

A: Mass of sample after 5 half life = 50 g Initial amount = ?

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: If the half-life of a parent material is 10 Ma, and about 88% (rounded) has decayed to daughter…

A:

Q: 25 grams of rock there are 3.43 grams of radioisotopes and 0.482 grams of nuclides derived from the…

A: Given: In 25 grams of rock, there are: 3.43 grams of radioisotopes. 0.482 grams of nuclides derived…

Q: Moonrock collected by a US Apollo mission is estimated to be 4.30 billion years old by uranium/ lead…

A:

Q: Complete the table for the radioactive isotope. Isotope 239 Pu, Half Life (In years) 24100, Initial…

A: The amount of time required by an element to reduce to half its quantity is called its half-life.

Q: An artifact is found that has 33% of the 14C it had when it was living. How long ago was this…

A:

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by…

A: Since this is a first order decay The rate constant with half life is given by…

Q: The half-life of Polonium-218 is 3.00 minutes.  How many half-lives pass after 18.0 minutes ?  The…

A: Concept - Radioactive decays are first order reactions. So we use the formula, Nt = No(1/2)n, where…

Q: 7. Californium-251 was synthesized at the University of California in 1950. At the time of sampling,…

A: Since you have posted a question with multiple sub-parts ,we will solve first three sub-parts for…

Q: A sample of Uranium-234 has been decomposing. If the original mass of 234U is 2.57milligrams, how…

A:

Q: A radioactive sample contains 1.55 g of an isotope with ahalf-life of 3.8 days. What mass of the…

A: Radioactive isotopes may occur naturally or be artificially produced. Radioactive isotopes possess…

Q: Normal No Spacing Head 三三。 Paragraph Styles 22. A normal adult jawbone contains 200 mg of Carbon-14…

A:

Q: Part 1 The half-lives of 235U and 23$U are 7.04 x 10° years and 4.47 x 10° years, respectively, and…

A:

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by…

A:

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 8.000 grams of U-234 are sealed in a container and then opened many years later -- how much time…

A:

Q: 4.605 The time for 99% of a sample of a radioisotope to decay is given by the equation to.99 = k…

A:

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: 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: 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: How much time in hours would it take for a 1.330 g sample of 233Pa to decay to a mass of 0.8628 g if…

A: Given, Half life = 5.1473 x 106 s Initial Mass of sample = 1.330 g  Time = ?

Q: 214 the half-life of 3Bi is 19.7 minutes, calculate the mass of radionuclide Bi-214 if the activity…

A: Here we have to determine mass of Bi-214 nuclide and specific activity i

Q: 238 92 U → ? +34Th Balanced equation: ОА. а-decay ов в decay OC. Fission OD. Fusion OE. Other

A:

Q: The half-life of 14C is 5730 yr. Find the number of disintegrations per hour emitted by 1.0 mol of…

A: half-life of 14C is 5730 yr.

Q: 8. The isotope ¹72Ta undergoes radioactive decay. After 2 hr, 1/16 of the initial amount of 172 Ta…

A:

Q: While harder to access another radioactive isotope Tc 93 has a halt life of 2.73 hours of it weee…

A: suppose it is possible to collect Tc 93m, it would be a good substitute because of its high…

Q: A laboratory investigation shows that a sample of uranium ore contains 8.11 mg of U (molar mass…

A: Given data: Mass of U-238 = 8.11 mg Mass of Pb-206 = 2.33 mg Half-life of U-238 = 4.5 x 109 years…

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.