Tritium, the hydrogen isotope of mass 3, has a half-life of 12.3 y. What fraction of the tritium atoms remains in a sample after 50.0 y?
Q: a) Natural potassium contains 40K , which has a half-life of 1.277×109 years. What mass of 40K in a…
A: a) The number of radioactive nuclei is,
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A: The correct option is (e) 50.26 s
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A: The given problem is based on radioactive decay and half life. The given equation is 128
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Q: Tritium, or hydrogen-3, is formed in the upper atmosphere by cosmic rays, similar to the formation…
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A: To the nearest hour, the radioactive half-life of the substance is 52.5hours
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Q: What is the mass of 25.0 mCi of technetium-99m (Tc99m)Tc99m , which has a half-life of 6.00 h?
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A: Given that half life of 231Pa is 3.25* 10^4 year and initial amount of sample is 10.41microgram.…
Q: A.) Natural potassium contains 40K, which has a half-life of 1.277 ✕ 109 y. What mass of 40K in a…
A: Decay Rate: The independent variable that is determined by taking the reciprocal of mean of a…
Q: Potassium-argon dating is used to measure the age of rocks formed from cooled lava by determining…
A: Potassium-argon dating is an interesting way to measure the age of rocks formed from cooled lava. It…
Q: The amount of radioactive material present at time t is given by A =?0? ?? where ?0 is the initial…
A: Amount of radioactive substance at time t is, A=Aoekt.............1 where Ao is the initial amount,…
Q: A group of geochemists have been analyzing a sample of radioactive material. After plotting ln(a)…
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Q: The radioactive isotope of lead ^209Pb decays according to the differential equation dN/dt=-kN. The…
A: Remaining fraction = (100-78)/100 e^-(.693t/3.3) = .22 take ln both sides - .693t/3.3 = ln (.22) =…
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Q: Use A(t )= A0ekt to determine how much of a 100-g sample is present after 250 years if the…
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Q: The decay of a radioactive material has a count rate is 2000 decays/min. Four hours later, the decay…
A: Given that:N0=2000 decays/minN=500 decays/minTime t=4 hours
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