10. The half-life of radium-226 is 1620 years. There is 100g of radium-226 in a particular sample now. Which of the following gives the correct amount of radium-226 in 3240 years? a. 400 g b. 50 g c. 25 g d. 0 g

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A: Given:- Under laboratory conditions the half-life of ozone is approximately 25 hours. If Q =Q0 ekt…

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A: Given information: The half life h =11 min, there are 300g of element X. To find: The time it will…

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A: The amount of radioactive element at time t is given by                   Nt=Noe-λt      where λ is…

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Q: 10)Suppose the amount of Carbon-14 remaining in a sample of 100 milligrams after x years can be…

A: Given the amount of Carbon-14 remaining in a sample of 100 milligrams after x years is given by:…

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Q: 17. The half-life of strontium-90 is 28 years. How long will it take a 50-mg sample to decay to a…

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Q: 1. Radium decomposes at a rate proportional to the amount present. In 100 yrs, 100 mg of radium…

A: Given that Radium decomposes at a rate proportional to the amount present. In 100 years, 100 mg of…

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A: Half life is very significant for chemical substances, especially for nuclear substances. It informs…

Q: 4.) The half-life of strontium-90 is 28 years. Find the rate of decay. How long will it take a 50 mg…

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Q: 1. A small metal bar whose initial temperature was 20°C, is dropped into a large container of…

A: 1) Here, the small metal's initial temperature = 20oC we know that here the rate of change in…

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A: We can find the answer for question-11 as below.

Q: How long does it take for 90% of a given quantity of the radioactive element cobalt-60 to decay,…

A: Radioactive element decay rate.

Q: 4. The population of a trading area is currently 100 thousand. At time t years from now population…

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Q: It is estimated that t years from now, the population of a certain country will be P(t)=…

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Q: 2-Suppose that the half-life of a certain radioactive substance is 2 days and there are 50g…

A: After each half life the amount left will be half the initial amount.

Q: 2 yeas ago there was 9 grams of radioactive substance. Currently, there are only 4 grams.  1) How…

A: Given problem is : 2 yeas ago there was 9 grams of radioactive substance. Currently, there are only…

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Q: What costs $60 million per gram and can beused to treat brain cancer, analyze coal for its sulfur…

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Q: Complete the table shown to the right for the half-Kife of a certain radioactive substance.…

A: Consider the radioactive decay function, At=A0e-kt Where, At represents the amount of substance left…

Q: If the half-life of a radioactive substance is 6,700 years, then at what rate is it decaying? 1…

A: The decay law is given by, A(t)=A0e-kt Where, A0 is the amount at t=0. And, t1/2=ln2k

Q: The half-life of Cobalt-60 is 6 years. How much of an initial 121 g sample will remain after 34…

A: The half-life of Cobalt-60 is 6 years, initial amount 121 g sample How much Cobalt-60 remain after…

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Q: Strontium-90 is a radioactive isotope with a half-life of 29 years. Strontium-90 is a major…

A: The half-life , T12 , is calculated using the formula, T12=ln 2λ , where, λ is the decay constant.…

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Q: Suppose a radioactive substance has a half-life of 1000 years. What fraction will be leftafter 1000…

A: Given that the half life is 1000 years. This means 1/2 of the the original amount is left after 1000…

Q: 4. The population of a trading area is currently 100 thousand. At time t years from now population…

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Q: The half life of a substance is described as the time it takes for the mass of a substance to be…

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Q: () 18 where M, is the The half-life of a radioactive element can be modelled by M= Mo initial mass…

A: The half-life formula is N=N012tt12. Here, N is the quantity remaining after time t, N0 is the…

Q: Under laboratory conditions the half-life of ozone is approximately 25 hours. If Q = Qoekt is the…

A: Decay rate is value of k at which ozone decays. It can be easily found using initial condition

Q: The half-life of Palladium-100 is 4 days. After 16 days a sample of Palladium-100 has been reduced…

A: Use radioactive substance formula to determine it

Q: 22. The half-life of radium-226 is 1620 years. a) If the current mass of a sample is 100 grams, what…

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Q: 1. How many weeks will it take to have 700 g of matter decay down to 330 g of matter if the decay…

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Q: 4.6.17 Find the half-life of a radioactive element, which decays according to the function The…

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Q: The half-life of Carbon-14 is 7 years. How much of an initial 169 g sample will remain after 28…

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Q: If 18g of a radioactive substance are present initially and 4 yr later only 9g​ remain, how many gs…

A: It is simple unitary method problem.

Q: 12. The half-life of strontium-135 is 2 years, and its mass. A. is modelled by, where A, is the…

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Q: A sample of a radioactive substance decayed to 92% of its original amount after a year. (Round your…

A: Firstly, we can set up exponential equation we can use formula