Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32P, how many grams will remain after 98.0 days ?   Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to 1/16.0 of the original amount. How long ago was this plant alive?

Q: An ancient club is found that contains 130 g of pure carbon and has an activity of 7 decays per…

A: The expression for the initial activity,

Q: If you are told the half life of a material is 3,500 years, then how much would be remaining from a…

A: Given data: Half life (t1/2)= 3,500 years Initial quantity of the substance (N0) = 10 g Time elapsed…

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

A: Let the initial amount of carbon be N0=100%. 63.2% carbon is lost, hence remaining carbon is…

Q: Why is carbon dating ineffective in finding the ages of dinosaur bones?

A:

Q: The half-life of carbon-14 is 5730 years. If 6.25% of the original sample remains, how old is the…

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Q: One of the radioactive nuclides formed in nuclear power plants is hydrogen-3, called tritium, which…

A: According to theroy of Radioactivitythe decay rate of a nuclei which has initially N0 nuclei  at any…

Q: If the half-life of Uranium 235 is 700 million years, what would its third-life be?

A: Given data: The half life of Uranium 235 is t1/2=700 million years.   The expression for the…

Q: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C14C has decayed to…

A: Half life of a radioactive decay is defined as the time required for the decay rate in the…

Q: Material found with the body had a C-14 activity of about 0.215 Bq per gram of carbon, where the A0…

A: The half life is t1/2=5730 yrs

Q: A particular isotope has a​ half-life of 74 days. If you start with 1 kilogram of this​ isotope, how…

A:

Q: If there were originally 400 grams of carbon-14 in an object, how many grams would remain after…

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Q: A particular isotope has a half-life of 1 minute. If you start with 1 gram of this isotope, how much…

A: In the given question, We have to determine the remaining quantity of the isotope after 10 minute.

Q: A sample containing 1 gram of Radium-224 was stored in laboratory 100 years ago. Now the sample…

A: Given data: The mass of Radium-224 at 100 years ago is m0=1 g. The mass of Radium-224 at now is…

Q: A sample from human remains found near Stonehenge in England shows that 71.2% of the carbon-14 still…

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Q: .    The half-life of Uranium-237 is 5.83 x 10^5 seconds. If you have a sample with 5.89 x 10^24…

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Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

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Q: A radioactive material has a half-life of eight days. How long will it take for the material to be…

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

A: Given data The half-life of the cesium-137 is t1/2 = 29.75 years. The initial amount of the…

Q: A rock started with 4000 atoms of a parent radioactive isotope and now has 3750 daughter isotopes.…

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Q: The half-life of Kryptonite is 12 years. If the original amount is 800g, a. How much is left after…

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Q: A sample of polonium-208 has a half-life of 2.898 years. What percent of polonium-208 remains after…

A: The half-life of a radioactive substance is the time required for a quantity to reduce to half of…

Q: Charcoal from an ancient campfire has a ratio of 14C to 12C that is one- fourth that of new wood.…

A: The half life of carbon 14 is given. t = 5730 years.Carbon -14 decays to Carbon-12

Q: The radioactive element 2760Co  has a half life of ______ years. If you had a sample of 17 g, about…

A: Given: The mass of sample (m) = 17 g. The half-life of cobalt (T1/2) = 5.27 years. The life of…

Q: 13. After two half-lives, how much of the original sample would remain? 50% 6.25% 12.5% 25%

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Q: A wooden boat discovered just south of the Great Pyramid in Egypt had a carbon-14 contains of…

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Q: A 250g sample of Calcium-47 has a half-life of 4.536 ????. How much Calcuim-47 remains after six…

A: Given data:  Initial amount of calcium-47 (N0) = 250 g Number of half-lives (n) = 6 Required: The…

Q: Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric…

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Q: A radioactive isotope has a half-life of 1.2 billion years. As measured by the presence of the…

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Q: (19) Remains recovered in a tomb are found to have 72% of its Carbon-14 remaining.  How old might…

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Q: The carbon content of living trees includes a small proportion of C-14, which is a radioactive…

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Q: Carbon 14 half life if 5700 years. A newly discovered fossilized organism is estimated to have…

A: Given that               The half life of C-14 is (t12 )= 5700year               The initial amount…

Q: Samples of seeds and plant matter from king tuntankhamun'sbtomb have a C-14 decay rate of 9.07…

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Q: The abundance of 40K is 0.012% of total natural potassium. The human body is 0.25% potassium by…

A: Since, the 70 kg human body has 0.25% of potassium by weight in which percentage of 19K40 is further…

Q: Carbon 14, with a half-life of 5700 years, is used to estimate the age of organic materials. What…

A: The expression for the half-life of carbon-14 is written as, Here, λ represents the decay constant…

Q: A fossilized bone is found to contain one-thousandth of the C-14 level found in living matter.…

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Q: The half-life of a certain radioactive isotope is 30 minutes. If we start out with 100 g of the…

A: Given: Half-life (T1/2) = 30 min. = 0.5 h. Mass of the isotope (m) = 100 g. Time (t) = 2.0 h.

Q: Explain how "carbon dating" is used to establish the age of once living things.

A: Carbon dating is a well-known technique, which is used to determine the approximate age of…

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

A: Given, Half life of radioactive element carbon-14 element ,t1/2 = 5750 years A scientist determined…

Q: C^14, a form of carbon that is used to find the age of fossils has a half life of 5730 years. how…

A: Given(s): Initial sample, N0=10 g. Half-life, t12=5730 yr Time, t=13,000 yr. Require: Amount of…

Q: If a sample contains 20g of an isotope that has a half life of 1000 years. How much will be left…

A: Given data:  Initial amount of sample (N0) = 20 g Half life (T1/2) = 1000 years Required: Remaining…

Q: How many protons and how many neutrons does each of these isotopes of radon contain? (a) Rn­-210…

A: Isotopes are the elements which contains same atomic number or number of protons but different mass…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.