If the initial mass of an Potassium was 159 grams will remain after 16 hours is 39.75 grams, then the half-life period of the Potassium is hours. O 15 O 8 O 13 O11 O 7

Q: Suppose a sample of a certain substance decayed to 73.2% of its original amount after 300 days.…

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Q: Cobalt-60 has a half-life of 5.24 years. (a) Find the mass that remains from a 100-mg sample after…

A: t=Duration of half life=5.24 years k=Constant C=Mass of Cobalt=100 mg…

Q: Element X decays radioactively with a half life of 11 minutes. If there are 300 grams of Element X,…

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

Q: (a) A radioactive substance has a half-life of 20 years. If 8 mg of the substance remains afte 100…

A: We will use radioactive decay formula ..

Q: If the initial mass of an Potassium was 149 grams will remain after 20 hours is 37.25 grams, then…

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Q: A fragment of bone is discovered to contain 20% of the usual 14C concentration. Estimate the age of…

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Q: After 5.5 days, a 100 mg sample of radon-222 decayed to 37 mg. (a) Find a formula for m(t), the mass…

A: GIVEN After 5.5 days, a 100 mg sample of radon-222 decayed to 37 mg. We need to find (a) Find a…

Q: The half-life, T, for a particular radioactive element is 7 min. Find the decay rate of the element.…

A: Half life = (ln2)/K = 7 min k= decay constant. Thus, k = (ln2)/7 = 0.099/min General decay equation…

Q: An unknown sample contains radioactive element U-235. If the original amount present is 3500 atoms,…

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Q: 30% of a radioactive substance has decayed after 10years, what is its half-life? 15.9 years 16.7…

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Q: The half-life of Carbon-14 is 10 years. How much of an initial 138 g sample will remain after 49…

A: Radioactive decay.

Q: The half-life of Carbon-14 is 11 years. How much of an initial 119 g sample will remain after 44…

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Q: A sample of radium has a weight of 1.5 mg and a half-life of approximately 6 years. How much of the…

A: Given : A sample of radium has a weight of 1.5 mg and a half-life of approximately 6 years.

Q: The half-life of Carbon-14 is 14 years. How much of an initial 143 g sample will remain after 43…

A: use t half formula

Q: Wood deposits recovered from an archaelogical site contain 30% of the C-14 they originally…

A: According to the given information,

Q: 13. It takes 22 days for 90 g of radioactive element to decay to 22 g. Determine the half-life, to…

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Q: The half-life of Strontium is 28 years. Suppose we have a 80 mg sample. How long will it take the…

A: Given: The half-life of Strontium is 28 years. We have to find the duration to take the sample to…

Q: Suppose that 10 grams of the 1 plutonium isotope Pu239 was released in the .Chernobyl nuclear…

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Q: A grey squirrel population was introduced in a certain county of Great Britain 35 years ago.…

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Q: 10. Cobalt-60 has a half-life of 5.42 years (a) Find the mass that remains from a 100-mg sample…

A: The given half life t1/2= 5.42 years

Q: The half-life of Carbon-14 is 5 years. How much of an initial 154 g sample will remain after 26…

A: Given data- A = The amount present at time(t). h = The material's half life. A∘= The amount of…

Q: The half-life, T, for a particular radioactive element is 9 min. Find the decay rate of the element.…

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Q: A sample of radium has a weight of 1.5 mg and a half life of approximately 6 years. How much of the…

A: Given Data: The weight of the sample of radium is: W=1.5 mg The approximate half-life of the sample…

Q: A certain radioactive isotope decays according to the model y(t) = yo e-0.0002, where y(t)…

A: according to our guidelines we can answer only three subparts, or first question and rest can be…

Q: The half-life, T, for a particular radioactive element is 15 min Find the decay rate of the element…

A: Given: The half life 'T' of the radioactive element=15 min. To find: The rate of decay of the…

Q: The half-life of a radioactive radium is 1650 * years, what percentage of the amount present now…

A: Here first we find rate of decay rate using half life formula t12=-1rln12wheret12=half lifer= decay…

Q: If the initial mass of an Potassium was 183 grams will remain after 22 hours is 45.75 grams, then…

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Q: Find the half-life (to the nearest year) of krypton if  r = −0.0641.

A: Given,              r = −0.0641

Q: The half-life of Carbon-14 is 5 years. How much of an initial 132 g sample will remain after 46…

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Q: The half- life of the radioactive substance Carbon- 14 is approximately 5750 years. Suppose an…

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Q: Suppose a sample of a certain substance decayed to 75.6% of its original amount after 300 days. (a)…

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Q: A sample of radium has a weight of 1.5 mg and a half-life of approximately 6 years. Part A: How much…

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Q: A certain radioactive isotope has a half-life of approximately 1750 years. How many years to the…

A: Consider the amount is, A=Pert here, A is the isotope, P is the initial amount and r is the…

Q: the population of a colony of mosquitoes obeys the law of uninhibited growth. if there are 1000…

A: The population of a colony of mosquitoes obeys the law of uninhibited growth. if there are 1000…

Q: A sample of radium has a weight of 1.5 mg and a half-life of approximately 6 years. How much of the…

A:

Q: years, 20% of a radioactive element decays. Find its half-life. (Round your answer to one decimal…

A: Given query is to find the half life if the substance

Q: A laboratory test confirms that 9 milligrams of a particular radioactive substance decreases to 7…

A: Answer and explanation is given below... Option (c) is correct

Q: Cobalt-60 has a half-life of 5.24 years. How long would it take a 100 mg. mass to ecay to 2 mg.?…

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Q: Radium has a weight of 1.5 and a half life of 6 years. What is its weight after 3 years?

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Q: in 1991, the body of a man was found melting in the snow of the alps of northern italy. an…

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Q: The radioactive isotope of potassium **K which is used in the diagnosis of brain tumors, has a…

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Q: A laboratory test confirms that 9 miligrams of a particular radioactive substance decreases to 7…

A: Explanation of the answer is as follows

Q: - Cobalt-60 has a half-life of 5.24 years. a. Find the mass that remains from a 100-mg sample after…

A: To find the mass that remains from 100 mg sample after 30 years and time required to reduce the…

Q: Strontium-90 has a half-life of 28 days.(a) A sample has a mass of 50 mg initially. Find a…

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Q: If the initial mass of an Potassium was 121 grams will remain after 22 hours is 30.25 grams, then…

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Q: The half-life of Carbon-14 is 11 years. How much of an initial 115 g sample will remain after 42…

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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 the initial mass of an Potassium was 111 grams will remain after 10 hours is 27.75 grams, then…

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Q: Determine the half-life of the substance that decays from A, to A in time t. A, = 41, A = 16, t = 12…

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Q: The half-life of Cobalt-60 is 8 years. How much of an initial 180 g sample will remain after 23…

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