Question 1 Initially, 200 million radioactive substances were present. After 12 hours the mass has decreased by 6%. If the rate of decay is proportional to the amount of substance present at time t find the amount of remaining after 48 hours. Question 2 Determine the half-life of the radioactive substance described in Problem 1.

Q: Carbon 14 which has a half-life of 5, 750 years, is used to determine the age of ancient object. If…

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Q: a. Two or more nuclei combine to form one larger nucleus in the process of nuclear_ i) fission, ii)…

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Q: One of the stable isotopes of Mg is Mg-24 What is the atomic number of Mg   Enter whole number only…

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Q: CHAPTER TEN RATES OF REACTIONS AND FACTORS AFFECTING IT The half-life of bismuth-212 is 1 hour. If…

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Q: Determine the half life of an isotope hat decays from 450.0g to 320.0g in 50 years.

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Q: What is the half-life of the bizarre isotope Toddium - 419 (it is a makeup element) if after 4.00…

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Q: The half-life time of an isotope of element X is 7.4 hours. Assuming that you start with 431 mg of…

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Q: Complete the given table. Round half-lives to one decimal place and values of k to six decimal…

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Q: Question 6: Radioactivity (See textbook Chapter 6 - Exercise 6) Cf has a half-life of 2.64 years. It…

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Q: What is the half life of radioistope if it decays to 12.5% of its radioactivity in 12 years?

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Q: Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-life…

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Q: 1.) Carbon-14 has a half-life of 5600 years. If you had a sample of 100% carbon-14, how much would…

A: Given, carbon-14 half life with 100 % carbon-14 sample.we are asked to calculate the amount of…

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Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

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Q: The half life for Carbon-14 is 5730 years. Calculate the amount of time it would take 60.0 g of…

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Q: The half-life of sodium-24 is 15 hr. If a sample initially contains 40. g of sodium-24, how much…

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Q: If 7.0 grams of a sample decays to 0.44 grams in 2.0 hours, what is the half-life time of the…

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Q: 8. Radioactive Iodine-131, with a half-life of eight days, is a common fission product and thus is…

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A: Interpretation -  To determine the the age of the artifact , when a radioactive isotope carbon-14…

Q: 3. Initially 100 millions of radioactive substance was present. After 6 hours the mass has decreased…

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Q: Heeded for this question. The half-life of the radioactive isotope thallium-210 is 1.30 minutes. How…

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Q: The first-order decay of radon has a half-life of 3.823 days.  How many grams of radon decomposes…

A: Given  Half life ( t1/2 ) = 3.823 days  Time ( t )          = 5.55 day  Initial Amount ( A0 )   = 80…

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Q: If 28.0% of a sample of sodium-24 decays in table(sodium-24) hours, what is the half-life of this…

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Q: ) Initially 200 millions of radioactive substance was present. After 12 hours the mass has decreased…

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Q: Element X has a half-life of 6 hours. How much of X remains from a 64kg sample after one day?

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Q: Phosphorus-32 is a radioactive isotope used as a tracer in the liver. How much phosphorus-32 was…

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

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Q: A radioactive material is sampled from a site of leakage. In 2020, the amount of radioactive…

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Q: If plutonium-238 has a half-life of 88 years, how long will it take for a 100g sample of it to decay…

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Q: 26. The rate of decay of a radioactive substance is x where x is the amount of the substance…

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Q: The half-lives of all the isotopes in the uranium decay series are short when compared to…

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Q: . A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were produced.…

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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.