A sample of sodium-24 was administered to a patient to test for faulty blood circulation by comparing the radioactivity reaching various parts of the body. What fraction of the sodium-24 nuclei would remain undecayed after 12.0 h? The half-life is 15.0h. If a sample contains 6.0 micrograms of 24Na, how many micro- grams remain after 12.0 h?

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A: Half-life is the time required for the reaction to be half completed. It is denoted by t1/2 . For a…

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A: Answer:Since, all nuclear reactions are first order reaction, therefore integrated rate law for…

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Q: -) The half-life of lodine-131 is 8.0252 days and the decay is first order. If 14.4 grams of 1-131…

A: Half life of iodine-131 (t1/2) = 8.0252 daysInitial amount of I-131 = [I-131]0 = 14.4 gamount of…

Q: 187 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A: Half-life of Cs is 30.2 years. Intial amount sample = 100 g  Final amount sample = 1.00 g

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A: To solve this problem we will use the first order chemical kinetics half life equation .

Q: If 28.0% of a sample of silver-112 decays in 1.52 hours, what is the half-life of this isotope (in…

A: Given values,      28% sample of silver=112 decays in 1.52 hours      that means 72% sample…

Q: The half-life of sodium-24 is 15 hr. If a sample initially contains 40. g of sodium-24, how much…

A: Radioactive reactions are First order reactions. Half life of Sodium-24 is 15 hr. Initial…

Q: How many radioactive disintegrations occur per minute ina 0.0010-g sample of 209Po that has been…

A: We know, k=ln2t1/2k - decay constant and t1/2 is half life

Q: A

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Q: If a tree dies and the trunk remains undisturbed for 1.375 × 10⁴ years, what percentage of the…

A: Radioactive decay follows first-order kinetics. The half-life of the first-order reaction does not…

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A: Given,Ordered sample of P32 = 950 mgTime required for shipping = 42.9 daysHalf-life of P32 = 14.3…

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: Detail mathematical calculation is shown below

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: ⊙ Radioactivity, phenomena follow first order            kinetics                K =2.303t…

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A: The integrated rate law expression for the first-order kinetics is: k = 1tlnAoAAo = initial…

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A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

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A: Given, half-life of nucleus is 3.88 days.  The half-life can be calculated by the expression given…

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Q: The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 2.000-mg sample remains after 9.50…

A: First of all let's see the given data in the question, Half-life of cobalt-60 ( t1/2 ) = 5.20 years…

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Q: How long long does it take for 78 % of sample of cobalt-60 to decay (the half life is 5,26 years)?

A: The rate of a reaction is expressed as: Rate = k[A]n where k is the rate constant, [A] is the…

Q: The half life of bromine-74 is 25 min. How much of a 4.0 mg sample is still active after 75min

A: Since the decay reactions are first order reactions  Hence the half life = ln(2) / K where K = decay…

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.