The radioactive element Carbon-14 has a half-life of approximately 5730 years. A fossil is measured to have lost 20% of its Carbon-14. Determine the age of the fossil to the nearest year.

Q: The half-life of Radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain…

A: Given,The half-life of Radium-226 is 1590 years. i.e., h=1590A sample contains 200 mg.…

Q: The isotope cesium-137 has a half-life of 29.75 years. How long will it take a 100 gram sample of…

A: To determine the time taken for 100 gram sample of cesium-137 to decay to 75 grams.

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

A:

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A: We have given the half life of radium is 1690 years.And the present amount of radium is 80 grams…

Q: The​ half-life of​ carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree…

A: Given that the​ half-life of​ carbon-14 is 5600 years and if a piece of charcoal made from the wood…

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

A: Given: The remaining percentage of carbon is 40%. The half-life of carbon-14 is 5730 years.

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

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Q: The half-life of the plutonium isotope is 24,360 years. If 10 g of plutonium is released into the…

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Q: An element with mass 730 grams decays by 27.6% per minute. How much of the element is remaining…

A:

Q: Given that the half-life of radium is 1690 years, how much in milligrams will remain of one gram of…

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Q: The half life of carbon-14 is 5730 years. How long will a certain amount of carbon - 14 decay by 90%…

A:

Q: The radioactive element Carbon-14 has a half-life of approximately 5730 years. A fossil is measure…

A:

Q: The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain…

A:

Q: A sample of a newly discovered element, West Virginium, has a half-life of 170 years. How long will…

A: We have to find the time required.

Q: An artifact was found and tested for its carbon-14 content. If 70% of the original carbon-14 was…

A: Recall the radioactive decay formula as follows. A=A02-thA is the final amountA0 is the initial…

Q: Researchers recorded that a certain bacteria population declined from 290,000 to 300 in 24 hours. At…

A: Bacteria in 16 hours=?

Q: The half-life of carbon-14 is known to be 5720 years. Doctor Frankenstein has 300 grams of…

A: From the given data:

Q: The radioactive element Carbon-14 has a half-life of approximately 5730 years. A fossil is a measure…

A:

Q: Find the half-life (in hours) of a radioactive substance that is reduced by 1515 percent in 6060…

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Q: The half-life of Strontium-90 is 28.79 years. If a sample contains 490 mg, how many mg will remain…

A: Given half life is 28.79 years Initial mass =490mg To calculate mass after 180 years.

Q: The half-life of carbon-14 is 5,730 years. If there are 600 grams of carbon-14 in a tree when it is…

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Q: The half-life of Carbon-14 is 7 years. How much of an initial 131 g sample will remain after 45…

A:

Q: If 525 mg of a radioactive element decays to 450 mg in 48 hours, what is its half-life?

A: we are using model for radioactive decayN=N0e-λtwhereN0=initial amountN=The amount test of a…

Q: The half-life of the plutonium isotope is 24,360 years. If 10 g of plutonium is released into the…

A: Half life of the plutonium isotope is 24,360 years. If 10g of plutonium is released into the…

Q: The radioactive element Carbon-14 has a half-life of approximately 5730 years. A fossil is measure…

A: Given : Half life of carbon- 14 is 5730 years

Q: The half-life of radium is 1690 years. If 10 grams is present now, how much will be present in 50…

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Q: a radioactive isotope, selenium, used in the creation of medical images of the pancreas, has a…

A: To use the exponential model of radioactivity to determine the required amount of substance

Q: A toxic radioactive substance in the amount of 7 miligrams per square centimeters is detected in the…

A:

Q: The radioactive element carbon-14 has a half-life of 5750 years. A scientist determined that a…

A: The half life is 5750 years. Amount of carbon-14 lost is 28%.

Q: Find the half-life (in hours) of a radioactive substance that is reduced by 5 percent in 15 hours.

A:

Q: How old is skeleton that has lost 55% of its carbon-14? The half-life of carbon-14 is 5700 years.…

A: Given that The half-life of carbon-14 is 5700 years To find How old is skeleton that has lost 55% of…

Q: The​ half-life of radium is 1690 years. If 40 grams are present​ now, how much will be present in…

A:

Q: A certain battery has had a capa dropped to a capacity of 70 amp percent decrease in capacity.

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Q: Find the half-life (in hours) of a radioactive substance that is reduced by 10 percent in 90 hours.

A: Half-life = 0.693/(Decay constant)

Q: The half life of radium is 1690years. If 59 grams are present now, how much will be present in 60…

A: Let A(t) be the amount remaining in t years, then

Q: A certain radioactive substance has a half-life of 38 hours. Find how long it takes for 90% of the…

A:

Q: The​ half-life of​ carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree…

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Q: An element with mass 310 grams decays by 8.9% per minute. How much of the element is remaining after…

A: Given   mass = 310 gm  Rate = 8.9 %  Time = 19 min

Q: The half-life of Carbon-29 is 1300 years. If 15 grams are present now, how much will be present in…

A: Let A(t) be the amount of Carbon-29 remaining in t years, then

Q: The half life of radium is 1690 years. if 50 grams are present now,how much will be present in 520…

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Q: A radioactive substance has a half-life of 25 years. If 640 grams of the substance are present…

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Q: An element with mass 490 grams decays 28.6% per minute. How much of the element is remaining after…

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Q: The half-life of silicon-32 is 710 years. If 60 grams is present now, how much will be present in…

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

A: Formula used:

Q: The half-life of a radioactive material is about 34.2 years. How much of the material is left after…

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

A:

Q: The​ half-life of radium is 1690 years. If 40 grams are present​ now, how much will be present in…

A:

Q: A certain radioactive substance has a half-life of 38 hour. Find how long (in hours) it takes for…

A: