Question 45 f the half life of P-32 is 14 days, how many grams will remain after 42 days if we start with a 100.0 gram sample? 50.00 grams 25.00 grams 12.50 grams 6.250 grams

Q: Question 26 If the half-life of a radioisotope is two days, what fraction of a sample of the…

A: Given Half life of radioisotope = 2 days Fraction of sample of radioisotope left after 4 days = ?

Q: medical technician is working with the four samples of radionuclides listed in the table below.…

A: Radioactive decay follows the first-order kinetics. The half-life of the first-order reaction does…

Q: Question 45 If the half life of P-32 is 14 days, how many grams will remain after 42 days if we…

A: 1- First we will determine the Rate constant ( k ) :  k = 0.6931 / half life  k = [ 0.6931 / 14 day…

Q: QUESTION 55 After 55 years, what mass (in g) remains of a 200.0 g sample of a radioactive isotope…

A: Because, the given reaction is the radioactive decay which obey first order kinetics, So Formula of…

Q: Many scientists believe that large asteroid struck the earth that kill off dinosaurs. Fragment of…

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Q: If the half-life for I-131 is 8 days and a patient is given 1.35 mg of this nucleus at 5:00 am in…

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Q: Question 2 Selenium-75, a beta emitter with a half-life of 120 days, is used medically for pancreas…

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Q: Question 9 The radioactivity of a 99mTc sample is measured 94 mCi at 5:00 PM. What time was it…

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Q: QUESTION 1 You started with 100g of an isotope and, after 36, days you are left with 6.25g. What is…

A: Question-1 Radioactive disintegration processes are first order reactions. Initial mass of isotope =…

Q: Iodine-131 is administered orally in the form of Nal(aq) as a treatment for thyroid cancer. The…

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Q: Substance D initially weighs 56 grams. After 6 minutes, it was observed that its mass decreased by…

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Q: 5.34 Fluorine-18, which has a half-life of 110 min, is used in PET scans. a. If 100. mg of…

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Q: If the half-life of phosphorus-32 is 14.3 days, how much of a 200. mg sample of phosphorus-32…

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Q: The half-life of Cs-131 is 30.2 years. How much time would it take for a sample to drop to 1.00% of…

A: * cs=3Half life=t12=30.2 yearsfrom this half life we can calculate , rate constant for this…

Q: Question: The half-life of a radioactive element is 50 minutes. How long will it take the mass of…

A: Introduction It should be remembered that the order of radioactive decay always remains equivalent…

Q: Nitrogen-13 has a biologic half-life of 2.84 minutes and emits positrons.    If a patient is…

A: Initial concentration of nitrogen-13 = 500.0 micrograms  Half- life = 2.84 minutes  Half-life means…

Q: If the half life of P-32 is 14 days, how many grams will remain after 42 days if we start with a…

A: The half-life of the first-order reaction does not depend on the initial concentration of the…

Q: Kr-81 has a half-life of 2.1 x 105 yr.  How many years does it take for 87.5% of this isotope to…

A: Since the decay reactions are first order reactions. And since we know that the relationship between…

Q: Which symbols would correctly complete this nuclear equation? C→'4N + ? Check all that apply. View…

A: Choose the correct symbol ---

Q: PART III. PROBLEM SOLVING: Solve what is asked and express your answers in four decimal places. Show…

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Q: PLAY STOP 4 Carbon-14 has a half life of 5730 years. How much carbon-14 would remain after 34380…

A: Given-> Half life = 5730 year  Time = 34380 year Initial amount = 54.0 gm

Q: QUESTION 8 If we start with 1.000 g of cobalt-60, 0.675 g will remain after 3.00 yr. This means that…

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Q: How did you get this? k===0.693t1/20.69315 hrs0.0462 hrs−1k=0.693t1/2=0.69315 hrs=0.0462 hrs…

A: Radio active decay The half life of radio active decay can be found out using the equation;…

Q: Phosphorus-32 is a radioactive isotope used as a tracer in the liver. How much phosphorus-32 was…

A: We will calculate initial quantity with the help of given information

Q: 210Pb has a half-life of 22.3 years and decays to produce 206Hg. If you start with 7.50 g of 210Pb,…

A: Decay reactions are first order reactions. Since we know that the relationship between the amount of…

Q: QUESTION 15 The half-life of the first order radioactive decay of K is 1.30 x 10 9 years. How long…

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Q: QUESTION 3 The half-life of cobalt-60 is 5.2 years. What happens to an aliquot of cobalt-60 after…

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Q: Be sure to answer all parts.   If a 520. mg sample of technetium−99m is used for a diagnostic…

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Q: Question Help ▼ When radioactive substances decay, the amount remaining will form a geometric…

A: Given : The amount of isotope remaining is making a geometric sequence.

Q: Conditions Column I CHOICES Column II Activity of 1. A sample of Sr-90 has Activity of a half-life…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: co-60 is used for radiation therapy as implants and as external source of radiation exposure. The…

A: The rate of a reaction is given by the rate of product formation  or the rate of disappearance of…

Q: Question 28 The half-life of 14C is 5,730 yr Assuming some charcoal from a campfire fraction of the…

A: We have to predict the age of piece of carbon.

Q: The half-life of 199Tc, a B- emitter, is 15.8 s. a. How many atoms of 1907TC are present in a sample…

A: Answer :-  a) Number of atoms of T43100c present in a sample with an activity of 0.200 μCi = 1.69 ×…

Q: A sample has a half life of 100 years. If it has been 200 years since it started to decay and there…

A: The question is based on the concept of chemical kinetics. we have to calculate initial mass of the…

Q: QUESTION 1 Iodine-123 (I-123) which is used for diagnostic imaging in the thyroid, has a half-life…

A: We will use intergrated rate equations for first order reaction to answer the question.

Q: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 50.5 g of 3ºP, how…

A: Nuclear disintegration follows first order kinetics 0.693/t1/2 = [2.303 log (A0/A)]/t Where t1/2 =…

Q: The half life of a drug in the body is 2 hours. (a) By what factor, a, is the amount of drug in the…

A: Given : Half life of drug is 2 hours.

Q: If bismuth-210 has a half-life of 5.0 days and you started with 30.59 grams then how many grams of…

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Q: In a living organism, the decay of C-14 produces 15.3 disintegrations per minute per gram of carbon.…

A: The disintegrations per minute of the sample should be: 2.7g × 15.3 disintegrations1 g × 1min =…

Q: How much energy (in MeV) is absorbed during the following nuclear transformation reaction? 208 pp+64…

A: Given reactionP208b   +   N64i     →      D271s     +    n01∆m = ∑M(Products) - ∑M(reactants) ∆m =…

Q: The half-life of 131I is 8.04 days.  Assuming you start with a 1.53 mg sample of 131I, how many mg…

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Q: Complete the following nuclear bombardment equation by filling in the nuclear symbol for the missing…

A: Given nuclear bombardment rection: U + 92235n → ? + 01Nb + 3 41101n01 We have to complete this…

Q: What is the half-life (t1/2) of a radioisotope if 1000 grams of the sample decays to 125 grams in…

A: Given data: No = 1000gm , N = 125gm, t=24.3 hours

Q: The half-life of mercury-197 is 64.1 hours. If a patient undergoing a kidney scan is given 5.0 ngng…

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Q: What is the most likely mode of decay that I-131 undergoes?

A: I-131 is the most commonly used radioisotope of iodine. It mostly undergoes decay by beta emission…

Q: Indium-111 has an effective half-life of 2.5 days . If 15.0 mCi dose is given, how much ^111In will…

A: Given: Half life of Indium-111 isotope (assuming A) = 2.5 days. And initial dose or activity of A =…

Q: 1. Gold-198 is used in the diagnosis of Ilver problems. If the half-life of Au-198 is 2.69 days: a…

A: Given-> Half life = 2.69 days Initial amount = 9.21 mg Time = 72.9 days

Q: 9 points The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams…

A: Answer

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.