Sodium-24 has a half-life of 15.0 hours. Suppose you had a sample containing 0.010 moles of Na-24. How many hours would be required to reduce your sample to 6.25 x 10-4 moles? Group of answer choices 60 30 120 45

Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: Copper-64 is used in the form of copper acetate to study brain tumors. It has a half-life of 12.8…

A: Since we know that radioactive decy follow first order kinetics  So to solve this problem we will…

Q: The half-life of strontium-87 is 2.8 h. What percentage of this isotope will remain after 8 h and 24…

A: Radioactive decay is the breaking of unstable nuclei into stable ones by emitting radiation. These…

Q: Phosporus-32 is used in biochemical studies to follow the pathway taken by metabolites. Its…

A: The question is based on the concept of chemical kinetics.   All radioactive decay follow first…

Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

A:

Q: The half-life of Po-216 is 0.16 s. How long would it take to reduce a sample of it to the negligible…

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

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

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

Q: Iodine-131 used to treat hyperthyroidism, has a half-life of 8.04 days. For a sample containing 10.0…

A: Half life time = 8.04 days  Initial mass = 10.0 μg  Time = 32.2 days Mass remain after 32.2 days = ?…

Q: 18° Re is used in the treatment of bone cancer. The half-life of 180 Re is 3.72 days. If you begin…

A: Given: Half-life of isotope = 3.72 days. The initial mass of isotope =1.76 µg And time passed = 18.6…

Q: Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-life…

A:

Q: Phosphours-32 is a commonly used radioactive nuclide in bichemical research, particularly in sutdies…

A: Mass of P-32 present in 175 mg of  Na332PO4 Molar mass of  Na332PO4 = 164 g/mol  164 g  Na332PO4…

Q: what mass remains after 28.5 days have passed?

A:

Q: Radioisotope X has a half-life of 4.0 h. Based on the figure below, if the original sample of the…

A: Half life (t1/2) :-  The time required for the concentration of reactant to reduce to half of its…

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

A:

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: The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The…

A: Radioactivity follows First order reaction.   For First order reaction : t1/2 = 0.693k where, t1/2 =…

Q: A 0.100 g of Tc -99 sample is used in a medical study. How much of the Tc- 99 sample remains after…

A: Tc-99 sample = 0.100 g half life of Tc-99 = 6 hours. to find mass after 24 hours. Radio active decay…

Q: What is the half-life of polonium-210 if it takes 828 days for a 100.0 g sample to be reduced to 1.6…

A: Polonium-210 is a radioactive element so it's decay is followed first order kinetics.

Q: The half-life of 123I is 13 hr.  How much of a  64 mg sample of 123I is left after 26 hours?

A: The isotope of iodine, 123I, undergoes decay in accordance with first order kinetics. The half-life…

Q: The half-life of Plutonium-241 is 9 years. How much of an initial 190 g sample will remain after 31…

A: The half-life of Plutonium-241, t1/2 = 9 years Initial mass of Plutonium-241, No = 190 g time…

Q: The half-life of protactinium-234 is 6.69 hours. What fraction of a given amount remains after 26.76…

A:

Q: Iodine-131 is used in the treatment of thyroid disease. What is the half-life of iodine-131 if a…

A: Weight of sample initially = 160mg Weight of sample finally = 5mg Time elapsed = 40 days We have to…

Q: Iodine-131 is used in the diagnosis and treatment of thyroid disease and has a half-life of 8.0…

A:

Q: The half life of 231Pa is 3.25 x 104 years. How much of an initial 10.40 microgram sample remains…

A: Formula used to calculate the sample that remains after 3.25X105 years,

Q: The isotope 90/38 Sr is one of the extremely hazardous species in the residues from nuclear power…

A:

Q: Consider the radioisotope 226Ra (half life = 1.60 x 10' years). What is the first order rate…

A: Given the question in half life of Ra is 1.60×103 years.  Calculate the rate constant of first order…

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…

Q: If the amount of radioactive sodium 24, used for studies of electrolytes within the body, the sample…

A: Given data: Radio active sodium -24 used in the studies of electrolytes within the body. Initial…

Q: The half-life of technetium-99 is 6.0 hours. How much of a 50.0 mg sample will remain after 24…

A: Given,  Half-life period of technetium-99 = t1/2 = 6.0 hours  Initial concentration = N0 = 50.0 mg…

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

A: Given information,     The half-life of cobalt-60 is 5.20 yr.     Mass of sample 2.000-mg     Time…

Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

A:

Q: Iron‑59 is used to study iron metabolism in the spleen. Its half‑life is 44 days.44 days. How many…

A: The time will take a 28.0 g28.0 g sample of iron‑59 to decay to 1.75 g has to be calculated

Q: lodine-131 is a radionuclide that is frequently used in nuclear medicine. Among other things, it is…

A: Sample mass of Iodine - 131 initially = 0.16 gram Half life of iodine-131 = 8 days We know that…

Q: The half-life of strontium-90 is 28 years. Suppose we have a 80 mg sample. (a) Find a function that…

A: Decay reaction of radioactive element is of first order. And for first order reaction, rate of the…

Q: The half-life of Radium-226 is 13 years. How much of an initial 179 g sample will remain after 36…

A: Radio active reactions are first order reactions. Decay constant (k) = 0.693 / t1/2 Where, t1/2 =…

Q: The graph below shows the rate of decay of the radioactive isotope K-40 into Ar-40 and Ca-40.…

A: The graph given is,

Q: After 42 years, what mass remains of a 100.0 g sample of a radioactive isotope with a half-life of…

A:

Q: Nitrogen -13 has a half-life of 10 minutes .What amount of a 16 mg sample would remain after 30…

A: Nitrogen-13 has a half-life of 10 minutes. How much of a 16 mg sample would remain after 30 minutes.…

Q: A  105.0 nanogram (ng)  sample of sodium−24 was stored in a lead-lined cabinet for 2.5 d.  How…

A:

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

A: The loss of elementary particles from an unstable nucleus results in the transformation of the…

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

A:

Q: a 102.0 nanogram(ng) sample of sodium-24 was stored in a lead-lined cabinet for 2.5 days How much…

A: Radioactive decay is a first order reaction. Conversion of days into hours: 1 day=24 hrs2.5…

Q: Iodine-131 is a radionuclide that is frequently used in nuclear medicine. Among other things, it is…

A: Nuclear chemistry is a branch of chemistry which involved the study of reactions in the nucleus. The…

Q: The half-life of carbon-11 is 20.3 minutes. How much of a 100.0 mg sample remains after 1.50 hours?…

A: For 1st order reaction the half life and rate constant relation K = ln2/t1/2   And AF = Aoe-(Kxt)…

Q: The half-life of the radioactive isotope 137Cs is 30.17 years. How long does one have to wait until…

A:

Q: Technetium-99 is often used for assessing heart, liver, and lung damage because certain technetium…

A: The radioactive elements are used for assessing of damage in body.The radioactive elements decay…

Q: Iodine-131 is often used in nuclear medicine to obtain images of the thyroid  If you start with…

A: Half-life is the time required for a quantity to reduce to half of its initial value. we represent…

Q: Sodium -25 has a half  life of 60.0 s. If 5.00 mg of sodium -25 disintegrated over a period of 3.0…

A: Atoms having same atomic number but different atomic masses are called isotope. For one there are…

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.