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: 1. A substance has a mass of 5 grams after decaying for 100 minutes. What was the mass of the…

A: Given that: Mass of substance left after decaying = 5 g Total time for decaying of substance = 100…

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: 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 116.8 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A: Given- Initial amount=116.8ng Final amount=14.60ng Time=47days

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: A radioactive isotope has a half-life of 11 minutes.  How many grams of a 18.68 g sample remain…

A: Given Half life = 11minutes = 11*60= 660 second Sample weight = 18.68g Time = 44 minutes = 44*60=…

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: 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: You have a sample of Bismuth-212 to prepare for an upcoming medical test.  This isotope has a…

A: The radioactivity follows first-order kinetics. The half-life relates to the rate constant, k for…

Q: at 8:00 am, a patient receives a 1.5 micrograms dose of I-131 to treat thyroid cancer. if I -131 has…

A: 1.5 micrograms dose of I-131Half life = 8 daysmass pf the I-131 the next days 05.00 pm=?mass pf the…

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: (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: [References) A rock containing 8 mg of plutonium-239 per kg of rock is found in a glacier. The…

A: Radioactive decay, also known as radioactive disintegration, is when an unstable nucleus loses its…

Q: A 450.0-mg sample of technetium-99m was used for a diagnostic test.  If technetium-99m has an…

A: Given - Initial amount=450.0mg Half life=4.8h Time=48h

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: 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: While in the upper peninsula, you have found an unusual fossil in a rock layer that you are really…

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Q: half-life of 4.536 days

A: Given data are as follows: Calcium-47 half-life = 4.536 days Initial weight of Calcium-47 = 250g

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

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Q: The half-life of copper-67 is 61 hours.  If an original sample contains 24 grams how many grams are…

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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: In order to investigate the age of a mineral sample believed to be millions of years old, which…

A: Please find your solution below : Isotopes are defined as the members of family of same element that…

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: The half-life of carbon-14 is 5730 years. The wrapping of an Egyptian mummy gave off 3.8 counts per…

A: From the given data we haveHalf life of carbon-14=5730 yearsWrapping of mummy=3.8…

Q: Enter your answer in the provided box. A rock sample originally contains 3.21 mg of 238U. How much…

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Q: an artifiact has a carbon-14 concentration that is 12.5%(1/8th) of that found in living organisms.…

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Q: why a physician would use an isotope with a shorter half- life to diagnose or treat patients

A: Radioactive elements are those which which emits radiations. In simpler words, an unstable nuclei…

Q: Technetium-99 which has a half life of 6 hours is a useful isotope in diagnostic tests. If a patient…

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