Radioactive radium has a half-life of approximately 1599 years. What percent of a given amount remains after 100 years?

Q: Radiocarbon C14 has a half-life of 5730 years. How many years will it take for 26%of a sample of C14…

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Q: A wooden artifact from an ancient tomb contains 45 percent of the carbon-14 that is present in…

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Q: A wooden artifact from an ancient tomb contains 20 percent of the carbon-14 that is present in…

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Q: At a certain instant, 100 grams of a radioactive substance is present. After 20 years, 99.76 grams…

A: given that 100 gm of a radio active substance is present. after 20 years 99.76 gm remain. we have to…

Q: You have 10 ounces of a radioactive substance with a half-life of 5 hours. How long will it be until…

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Q: A radioactive substance has a half-life of 29 years. What percent remains 80 years after being to…

A: We will find the remains after 80 years in percentage.

Q: The half-life of the radioactive element tritium is 12 years. Find its decay constant.

A: We have, the half-life of the radioactive element tritium is 12 years. As we know that, The time in…

Q: A wooden artifact from an ancient tomb contains 60 percent of the carbon-14 that is present in…

A: Please refer to the image below

Q: A wooden artifact from an ancient tomb contains 25 percent of the carbon-14 that is present in…

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Q: A wooden artifact from an ancient tomb contains 25 percent of the carbon-14 that is present in…

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Q: If radio active carbon-14 has a half -life of 5750 years ,what will remain of one gram after 3000…

A: The formula for the half-life is given by Nt=N012tt12 where N(t) is the amount of substance…

Q: A wooden artifact from an ancient tomb contains 40 percent of the carbon-14 that is present in…

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Q: The half-life of radioactive radium (226Ra) is 1599 years. What percent of a present amount of…

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Q: Radioactive cesium-137 has a half-life of 30.17 years. How much of an initial amount of 1,000…

A: If N0 is the initial amount and t is the number of years then equation of decay  is given by…

Q: Twenty percent of a radioactive substance decays in ten years. By what percent does the substance…

A: We have to find the percent the substance decay each year.

Q: Lead-210 has a half-life of 22.3 years. How much of a 102-mg sample would be remaining after 6 years

A: To solve such problem we use the following two equations K=0.693t12 N=N0e−Kt Given that T12=22.3…

Q: After 15 years, one fourth of the initial mass of radioactive substance has decayed. a) Find the…

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Q: A wooden artifact from an ancient tomb contains 25 percent of the carbon- 14 that is present in…

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Q: An unknown radioactive element decays into non- radioactive substances. In 240 days the…

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Q: Potassium-40, with a half-life of 1.25 billion years, has been used by geochronologists trying to…

A: Let 't' be the number of yearsLet 'x(t)' be 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: Radioactive radium has a half-life of 1899 years. If 20g of the substance are present initially,…

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Q: The half life of a certain isotope is 8.5 hours. If we have a sample of 10 ounces of that isotope,…

A: Consider the following information: Half life periodt12=8.5 hours Decay constantλ=ln2t12=ln28.5…

Q: A wooden artifact from an ancient tomb contains 20 percent of the carbon-14 that is present in…

A: We have to find how long ago, to the nearest year, was the artifact made.

Q: A wooden artifact from an ancient tomb contains 50 percent of the carbon-14 that is present in…

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Q: A wooden artifact from an ancient tomb contains 60 percent of the carbon-14 that is present in…

A: Given:-Carbon contains 60% of its initial value  First we find the vale of decay rate from half time…

Q: The half-life of radioactive strontium-90 is approximately 31 years. In 1963, radioactive…

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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: wooden artifact from an ancient tomb contains 25 percent of the carbon-14 that is present in living…

A: We have given that a wooden artifact tomb contains 25 percent of the carbon-14 that is present in…

Q: After 100 years, 1/32 of the original amount of a substance remains. What is the substance…

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Q: A wooden artifact from an ancient tomb contains 20 percent of the carbon-14 that is present in…

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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:

Q: A wooden artifact from an ancient tomb contains 40 percent of the carbon-14 that is present in…

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Q: The​ half-life of a radioactive substance is 25 years. If you start with some amount of this​…

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Q: A wooden artifact from an ancient tomb contains 35 percent of the carbon-14 that is present in…

A: Radioactive decay

Q: How many half lives must have passed for an isotope with a half life of 10 years to decay from 1600…

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Q: A wooden artifact from an ancient tomb contains 60 percent of the carbon-14 that is present in li…

A: The solution is given below

Q: Nuclear engineering If radium has a half-life of 1600 years, how much of 100 mg will re- main after…

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Q: The​ half-life of a radioactive substance is 20 years. If you start with some amount of this​…

A: Given Half life of a radioactive substance is 20 years

Q: A wooden artifact from an archeological dig contains 60 percent of the carbon-14 that is present in…

A: The amount of time taken to decay a substance follows exponential model P(t)=P0ekt. Here P(t)…

Q: A wooden artifact from an ancient tomb contains 25 percent of the carbon-14 that is present in…

A: For the given wooden artifact which contains 25 % of C-14 half life is 5730 years  Number of years…

Q: Cesium-137 has a half-life of approximately 30 years. How much of a 40-gram sample would be left…

A: The exponential decay function is given by P = P0·ek·t where t = time in years P = the amount of…

Q: A sample of a radioactive substance decayed to 10% of its original amount after 30 years. What is…

A: Given After 30 years substance decayed to 10 % of its original amount

Q: A wooden artifact from an archaeological dig contains 80 percent of the Carbon-14 that is present in…

A: Given that a wooden artifact from an archaeological dig contains 80 percent of the Carbon-14 that is…

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

A:

Q: A wooden artifact from an ancient tomb contains 50 percent of the carbon-14 that is present in…

A:

Q: A wooden artifact from an ancient tomb contains 50 percent of the carbon-14 that is present in…

A:

Q: A wooden artifact from an archaeological dig contains 90 percent of the Carbon-14 that is present in…

A: Formula used:

Q: A sample of an isotope decayed to 77.3% of its original amount after one year. What is the half-life…

A: Radioactivity phenomena follow first kinetics: so,    Rate=kA1      k=constant by solving this…

Q: If 250 mg of a radioactive element decays to 200 mg in 48 hours, find the half-life of the element.

A:

Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.