A particular radioactive isotope decays from 190 milligrams (mg) to 152 mg in 15 days. Find...
A particular radioactive isotope decays from 190 milligrams (mg)
to 152 mg in 15 days. Find the half life of the isotope.
Hint: Find the rate first. The half life of the isotope is
the half value of 190 mg then solve for x.
Your answer is
days.
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A particular radioactive isotope decays from 190 milligrams (mg)
to 152 mg in 15 days. Find...
231 A 60 mg sample of a radioactive isotope decays to 50 mg after 4.7 days....
231 A 60 mg sample of a radioactive isotope decays to 50 mg after 4.7 days. a) Determine the half-life. b) How long will it take for the amount of the isotope to decrease to 20 mg?
Please show your steps clearly. . The radioactive isotope Uranium-234 decays to Thoriu-230 with a half-life of T. Thorium 230 itself is also radioactive and decays to Radium-226 with a half-life of γ...
Please show your steps clearly.
. The radioactive isotope Uranium-234 decays to Thoriu-230 with a half-life of T. Thorium 230 itself is also radioactive and decays to Radium-226 with a half-life of γ and γ > τ Although Radium-226 is also radioactive its half-life is much longer than T and γ and here we assume that it is relative stable. Consider the scenario when we start with a certain amount of pure Uranium-234, because of this chain of decays, we...
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A 0.0116-g sample of a radioactive isotope with a half life of 1.3x109 years decays at the rate of 2.9x104 disintegrations per minute. Calculate the molar mass of the isotope. Enter your answer in scientific notation. (g/mol)
QUESTION 2 (a) A radioactive isotope, Pb-209, decays at a rate proportional to amount present at...
QUESTION 2 (a) A radioactive isotope, Pb-209, decays at a rate proportional to amount present at time t and has a half-life of 3.3 hours. If 1 gram of the isotope is present initially, how long will it take for 95% of the lead to decay?| (8 marks) (b) Form the differential equation associated with the given primitive y = Ae*' -1, by eliminating the arbitrary constants A. (4 marks) (C) Write the differential equation (1+ y2)dy + x =...
A radioactive isotope decays by B" emission with a half-life of 1.0 min. During the first...
A radioactive isotope decays by B" emission with a half-life of 1.0 min. During the first 1.0 min, a particular sample emits 1000 B particles. During the next 1.0 min, the number of B- particles this sample will emit will be closest to 250. 500. O 1000. 1500. 2000.
An initial amount of 100 g of the radioactive isotope thorium-234 decays according to Q(t) =...
An initial amount of 100 g of the radioactive isotope thorium-234 decays according to Q(t) = 100e -0.02828t where t is in years. How long before half of the initial amount has disintegrated? This time is called the half-life of this isotope. (Round your answer to one decimal place.) yr
A patient is given 0.055 mg of technetium-99 m, a radioactive isotope with a half-life of...
A patient is given 0.055 mg of technetium-99 m, a radioactive isotope with a half-life of about 6.0 hours. Part A How long does it take for the radioactive isotope to decay to 2.3×10−3 mg ? (Assume no excretion of the nuclide from the body.) Express your answer using two significant figures
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Gallium 67 (67Ga) is a radioactive isotope with a half-life of 3.26 days. It’s used in nuclear medicine to locate inflammations and tumors. Accumulations of 67Ga in a patient’s tissue can be detected by looking for the gamma rays it emits when it decays. A radiologist usually begins looking for the 67Ga about 52 hours after administering it to a patient. What fraction of the original 67Ga nuclei remains after 52 hours? **Please solve using half life equation formula, you...
The radioactive isotope thorium 234 has a half-life of approximately 578 hours. (a) If a sample...
The radioactive isotope thorium 234 has a half-life of approximately 578 hours. (a) If a sample has a mass of 67 milligrams, find an expression for the mass after t hours. Q(t) = 67e-0.0011997 (b) How much will remain after 85 hours? (Round your answer to one decimal place.) 60.5 mg (c) When will the initial mass decay to 20 milligrams? (Round your answer to one decimal place.) 1008.3 x hr
1. A patient is given 0.050 mg of technetium-99 m, a radioactive isotope with a half-life...
1. A patient is given 0.050 mg of technetium-99 m, a radioactive isotope with a half-life of about 6.0 hours. How long does it take for the radioactive isotope to decay to 4.2×10−3 mg ? (Assume no excretion of the nuclide from the body.) Express your answer using two significant figures.
231 A 60 mg sample of a radioactive isotope decays to 50 mg after 4.7 days. a) Determine the half-life. b) How long will it take for the amount of the isotope to decrease to 20 mg?
Please show your steps clearly.
. The radioactive isotope Uranium-234 decays to Thoriu-230 with a half-life of T. Thorium 230 itself is also radioactive and decays to Radium-226 with a half-life of γ and γ > τ Although Radium-226 is also radioactive its half-life is much longer than T and γ and here we assume that it is relative stable. Consider the scenario when we start with a certain amount of pure Uranium-234, because of this chain of decays, we...
QUESTION 2 (a) A radioactive isotope, Pb-209, decays at a rate proportional to amount present at time t and has a half-life of 3.3 hours. If 1 gram of the isotope is present initially, how long will it take for 95% of the lead to decay?| (8 marks) (b) Form the differential equation associated with the given primitive y = Ae*' -1, by eliminating the arbitrary constants A. (4 marks) (C) Write the differential equation (1+ y2)dy + x =...
A radioactive isotope decays by B" emission with a half-life of 1.0 min. During the first 1.0 min, a particular sample emits 1000 B particles. During the next 1.0 min, the number of B- particles this sample will emit will be closest to 250. 500. O 1000. 1500. 2000.
An initial amount of 100 g of the radioactive isotope thorium-234 decays according to Q(t) = 100e -0.02828t where t is in years. How long before half of the initial amount has disintegrated? This time is called the half-life of this isotope. (Round your answer to one decimal place.) yr
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