. A sample of lodine-131 decays for three half-lives. At this point there is 0.75g of lodine-131 remaining. How much lodine-131 was in the original sample?

Q: atom 16. Phosphorus- 32 has a half-life of 14.3 days and is used in the treatment of 32/16 leukemia,…

A: Beta particle decay:                               A Beta particle is a high energy electron that…

Q: The half-life of 26?? 59 is 44.6 days. How long will it take for 95.0% of a sample of this nuclide…

A:

Q: A radioactive sample contains 3.01×1018 atoms of a nuclide that decays at a rate of 3.28×1013…

A: The radioactive decay follows first-order reactions. Therefore, N = N0 e -λt

Q: = 176.5 h) to decay. Use the Calculate the time required for 46.80 % of a sample of X (t, formula…

A: Given : Half life i.e t1/2 of reactant (radioactive isotope) = 176.5 hr. And percent of reactant…

Q: A 6.00g sample of Iodine-131 decays until there is only 0.75g of Iodine-131 remaining. How much time…

A: Given data:

Q: Zinc-71 decays to a gallium-71 nuclide with a half-life of 2.45 minutes. What percent of a zinc-71…

A: We have to find out the percentage of zinc for the given question

Q: A sample of polonium-210 has a half-life of 138 days a)What fraction of polonium-210 remains after…

A:

Q: Write a partial decay series for Th-232 undergoing the sequential decays: a, B, B, a.

A: α decay means atomic mass reduce by 4 and atomic number reduce by 2. β decay means no change in…

Q: 1. The radioactive nuclide has a half-life of 17.5 hours. What a 0.0100 g sample after 24.0 hours…

A:

Q: A sample of lead isotope Pb decays by emitting an alpha particle to form the nuclide W. If the half-…

A: Radioactive Decay is the process where an unstable atomic nucleus loses energy in the form of…

Q: The radioactive nuclide has a half-life of 5.27 years. Calculate the mass of that remains from…

A: The amount of time that passes is a whole number multiple of the radioactive nuclide half-life.…

Q: What type of decay occurs with the transformation of Th-234 to Ra-230?

A: The type of decay occurs with the transformation of Th-234 to Ra-230 has to be given.

Q: After 52 hours of decay, only 0.06m of Cu-64 remains from the original sample of 1g. What is the…

A:

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

Q: How much of a 0.15 g sample of U-238 after the passage of 3200 years? Half life is 4.01×10⁹ years.

A: Given: Mass of sample = 0.15g Duration of decay= 3200 years. Half life= 4.01×109 years To find: The…

Q: How long does it take a 100.00g sample of As-81 to decay to 6.25g?

A: remaining amount of radioactive substance is related with initial amount according to following…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.5 g remain. What is the original…

A:

Q: If the half life of a radioactive isotope is 3 minutes, how much of an 8 Ci sample would remain…

A:

Q: 2. The half-life of radon-222 is 3.8 days. How much of a 100 gram sample is left after 15.2 days?

A: Given data contains, The half-life of radon-222 is 3.8 days. Mass of sample left after 15.2 days is…

Q: lead (214Pb82) decays to bismuth (214Bi83) emitting negative beta particles with a half-life of…

A: answer =  1.1846 x 10-11 curie

Q: Time (days) If the initial sample is 2.25 g, what mass of the original iridium-192 remains after…

A:

Q: 10 half lives

A: 1/1024 fraction of original radioactive material remains after 10 half lives.

Q: Radium-221 has a half life of 30 seconds. How long will it take for 82% of a sample to decay?

A: Half life =30 seconds Decay percentage = 80%

Q: A The balf-life of barium-131 is 12 days. How many grams remains after 60 days if the initial sample…

A:

Q: An 80 g sample of radioisotope decayed to 10 g after 24 days. What was the total number of grams of…

A:

Q: The half-life of 51Cr is 2.78×101 day. Calculate how much time it would take for an isolated…

A:

Q: Tc-99 is often used in medicine and has a half-life of about 6 hours. if a patient is given 30.0…

A: First of all you need to find the radioactive decay constant of this nuclei. Which is nothing but -…

Q: Bismuth-209 has a half-life of 2.01 x 1019 years.  How long will it take for 6.92 kg of bismuth-209…

A: We have to predict the time taken.

Q: Complete the following nuclear decay process: ²³⁵₉₂U → ⁴₂He + ___ A) ²³⁹₉₄Pu B) ²³¹₉₄Pu C)…

A: Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle and…

Q: After 40.0 days, how much Ac-225 remains if the starting mass was 94.0 g? Ac-225 has a half life of…

A:

Q: The half life of iodine-125 is 60 days. What fraction of iodine-125 nuclides would be left after 360…

A: As per guidelines if multiple questions posted , first question is allowed to answer , please post…

Q: percentage of his original carbon-14

A:

Q: Write a partial decay series for Th-232 undergoing the following sequential decays: a, ß, a, ß

A: When a radioactive element emits an alpha (α) particle, the mass number of the daughter element is…

Q: Fluorine-21 has a half life of approximately 5 seconds. What percent of the original nuclei would…

A:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.8 g remain. What is the original…

A:

Q: The oxygen-16 nucleus 16₈O has a mass defect (∆m) of -0.2197 amu when formed from its constituent…

A: Given that, ∆m= -0.2197 amu To calculate: binding energy (∆E) per nucleon for oxygen-16

Q: The oxygen-16 nucleus 16₈O has a mass defect (∆m) of -0.1302 amu when formed from its constituent…

A: The binding energy is the energy released by the molecule when a nucleus is formed. The mass of the…

Q: 15. What percent of iodine is left if 5 half-lives have passed? 16. What percent of iodine-125 has…

A: We are given data in the table of decay of isotope 125 and we have to tell about the half life and…

Q: Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. What is the activity of the…

A: The activity of a radioactive sample is measures as `N_0` counts per minute at. The activity of a…

Q: A rock contains a Pb-206 to U-238 mass ratio of 0.473:1.00. Assuming the rock did not contain any…

A:

Q: If you have 2.00 grams of a radioisotope, with a half-life of 5 days, how much of the isotope is…

A: Given;

Q: a) Mrs. Price's son, Liam is currently working as a boilermaker at the Darlington Nuclear Power…

A:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

A:

Q: Polonium 209 (Po-209) has a half life of 103 years. How long would it take a 100-g sample to decay…

A:

Q: With a half-life of 6.56 minutes, aluminum-29 decays to silicon-29 nuclide. After 18 minutes, what…

A:

Q: Potassium-40 decays to produce Ar-40. What is the method of decay? Write the nuclaarequatinn for…

A:

Q: For the formation of francium-221 through an alpha decay, the alpha particle and the francium-221…

A: • Francium-221 is formed by the emission of alpha particles.    • We need to determine the parent…

Q: A freshly prepared sample of radioactive nuclide undergoes 3312 disintegrations per second. After…

A: The radioactive reaction is first order reaction hence, it will follow first order of kinetics as-…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 2.5 g remain. What is the original…

A: Given :-  Amount of sample left after 120 years = 2.5 g  Half-life kf Cs-131 nuclide = 30 years  To…

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.