Carbon-14 measurements on the linen wrappings from the Book of Isaiah on the Dead Sea Scrolls indicated that the scrolls contained about 79.5% of the carbon-14 found in living tissue. Approximately how old are the scrolls? The half-life carbon-14 is 5730 years

Q: In the year 2005, a picture supposedly painted by a famous artist some time after 1475 but before…

A: This is a question based on radiocarbon dating. Here we will use first order reaction rate to…

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A: The solution is as follows :

Q: Strontium-90 Original amount: 5 g Amount left: 0.3125 g Total time: Half-life: 28.8 y Number of…

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Q: Determine how much energy is released in the following fission reaction: 1n0…

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Q: Explain how nuclear radiation of all kinds are harmful to living organisms. Explain how isotopes…

A: Nuclear radiation is more harmful because it can break chemical bonds or ionise molecules, damaging…

Q: After 40.0 days, how much Ac-225 remains if the starting mass was 73.0 g? Ac-225 has a half life of…

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Q: If two grams of a radioactive isotope has a half-life of twenty hours, the half-life of one gram of…

A: We will use first order intergrated rate equations and half life to answer this question.

Q: Complete the table for the radioactive isotope. Half-life Initial Amount After Isotope (years) |…

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Q: A radioactive sample has a half-life of 3.0 min. What fraction of the sample is left after 12 min? O…

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Q: Complete each nuclear fission reaction.

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Q: Nuclear transmutation happens when a radioisotope disintegrates on its own giving alpha or beta…

A: When the radioactive elements present in nature spontaneously decay by a process that causes…

Q: If a rock contained 12.0 g of ⁴⁰K when the earth was formed 4.54 billion years ago and the half-life…

A: Given information is as follows; Initial mass of ⁴⁰K in the rock A0 = 12.0 g Final mass of ⁴⁰K in…

Q: A radioactive isotope has a half-life of 12.0 seconds. How much of a 100 gram sample is left after…

A: Given  Half life of radioactive isotope ( t1/2 )  = 12 second  Initial Mass of sample   ( A )0 = 100…

Q: Uranium-235 decays to Lead-207 with a half life of about 704 million. years. if you find a 1000g…

A: Half life of Uranium-235t12 = 704 million years Initial amount of fossilNo= 1000 gms Final amount of…

Q: 12) Scientists are using Carbon-14 to date a fossil found in some ruins in a crater in southern…

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Q: The half-life of Radium-226 is 1600 years. If 30 grams are left after 8,030 years, how many grams…

A: Radioactive decay follows first order kinetics.  k = 0.693/t0.5  Or, k = 0.693/1600 year^-1 =…

Q: Iron-59 has a half-life of 45 days. If 168 g of a radioactive iron (59Fe) is received in the lab…

A: We know radioactive decay is first order reaction so the half-life of a first-order reaction is-…

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: A small figure carved from wood, believed to predate the period of Roman occupation of the Middle…

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Q: Carbon -14 has a half-life of 5.730 x 10 3 years.  If the original mass of the parent is 501.695 g,…

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Q: a 45.91 mg sample of a pure radioisotope has a half-life of 52 days, what will be the mass of the…

A: Given 45.91 mg sample of a pure radioisotope has a half-life of 52 day mass of the original…

Q: Compare the relative health risks of contact with a given amount of 226Ra, which has a half-life of…

A: In order to solve this question, we will apply the formula for half life and find out the rate…

Q: (19] There are 40 grams of radioactive substance at one point in time. After two hours, only 30…

A: The half-life of a quantity is the amount of time it takes to decrease to half of its original…

Q: An unknown radioactive substance has a half-life of 3.20 hours. If  20.8 g of the substance is…

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Q: A researcher claims that an ancient scroll originated from Greek scholars in about 500 B.C. Its…

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Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

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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: 3 Carbon-14 has a half life of about 5,730 years. If an archeologist examines a bone and finds 6.25%…

A: Given :  Half life of C-14 = 5730 years  % of C-14 = 6.25 %

Q: A piece of wood from an ancient artifact has a carbon-14 activity of 11.7 disintegrations per min.…

A: Decay reactions are first order reactions. Since we know that the relationship between the activity…

Q: 9) Determine the binding energy of an Al-28 nucleus. The Al-28 nucleus has a mass of 27.9819101 amu.…

A: The objective of the question is to calculate the binding energy.

Q: An unknown radioactive substance is currently decaying. Initially, the sample contained 16.1g of the…

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Q: After 40.0 days, how much Ac-225 remains if the starting mass was 94.0 g? Ac-225 has a half life of…

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Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

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Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

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Q: How many half-lives does it take a 10.0 gram sample of 12353I to drop to 0.625 grams? What length…

A: The time has to be calculated

Q: What is emitted in the nuclear transmutation? 27^Al(n,?)^24 Na a neutron a gamma photon a beta…

A: The above reaction notation shows nuclear transmutation . The target nucleus is Al , the bombarding…

Q: 210Bi → β− + ? 106Ag → 106Cd + ? 68Ge + e → ?

A: Radioactive decay:  It is the process by which radioactive elements which are highly unstable…

Q: If the half-life of a radioactive substance is 4 days how much material will remain after 16 days if…

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