The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min) argon-44 1212 lead-196 3737 potassium-44 2222 indium-117 4343 If the initial amount of argon-44 is 4.84.8 g, how much argon-44 is left in the body after 2424 min? mass:   g

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A: Given  Half life of Lead - 196     = 37 min  Initial Amount (A)0          =  64 mg Remaining Amount…

Q: If you accidentally spill phosphorus-32 onto your shoe, how long would it take before 99.9% of the…

A:

Q: Consider a radioactive sample with a half-life of one week. How much of the original sample will be…

A: Half-life period is defined as the time taken for amount of the sample to reduce to half of its…

Q: The half-life of 234U, uranium-234, is 2.52 105 yr. If 98.9% of the uranium in the original sample…

A:

Q: The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope…

A: Consider the given information is as follows; Half-life for lead-196  t12 = 37 min Initial amount of…

Q: The half-life of Oxygen-14 is 1.177 minutes.  You originally have 20 grams of it.  After roughly 3.5…

A: Given: Half-life of Oxygen-14 is 1.177 minutes Mass of Oxygen-14 is 20 g

Q: Technicium-104 has a half-life of 18 minutes.If the initial mass is 100.0g,how much remains after 90…

A:

Q: The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope…

A:

Q: 4. Radon-222 has a half-life of 2.8 days. How many half-lives will pass after 28 daysa O 19 O 5 O 10…

A: Given that: half life of Rn = 2.8 days To find: How many half life will pass after 28 days?

Q: After 20 years, only 3.125% of the initial amount of radioactive isotope is left. What is the…

A:

Q: If you start with 71.0 grams of a radioactive substance with a half life of 3 days, how much will be…

A: Here given, Initial amount (N0) = 71 grams Half life (t1/2) = 3 days Time (t) = 15 days Amount left…

Q: The Br-82 nucleus has a half-life of 1.0 x 103 min. If you wanted 1.0g of Br-82 and the delivery…

A: Given the half-life of Br-82, t1/2 = 1.0*103 min  Disintegration constant, λ = 0.693t1/2 =…

Q: The half-lives of different radioisotopes are given in the table. Half-life (min) 12 37 potassium-44…

A:

Q: Technetium-99m, an important radionuclide in medicine, has a half-life of 6.0 hours. What percentage…

A: Formula for radioactive decay is given as,

Q: In a dusty corner of a spooky abandoned lab, you find a vial labeled “70g of iron-55”.  You weigh…

A: Welcome to bartleby !  We have to calculate time required

Q: A radioactive isotope has a half-life of 11 minutes.  How many grams of a 18.68 g sample remain…

A: Given Half life = 11minutes = 11*60= 660 second Sample weight = 18.68g Time = 44 minutes = 44*60=…

Q: Gold-198 has a half-life of 2.7 days. How much of a 488.6 mg gold-198 sample will remain after 13.5…

A: We have half life as 2.7 days, we have initial amount as 488.6 mg, we have to calculate the sample…

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 6.00 g of 32P, how many grams will remain…

A: Given: The half-life of phosphorus -32 =14.0 days i.e. t1/2=14.0 days Starting amount of P=6.00 g

Q: The half-life of Polonium-218 is 3.00 minutes.  How many half-lives pass after 18.0 minutes ?  The…

A: Concept - Radioactive decays are first order reactions. So we use the formula, Nt = No(1/2)n, where…

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: You have a sample of Bismuth-212 to prepare for an upcoming medical test.  This isotope has a…

A: The radioactivity follows first-order kinetics. The half-life relates to the rate constant, k for…

Q: I-131 has a half-life of 8.04 days. If a sample initially contains 20.0 g of I-131, approximately…

A: Interpretation -  To determine the amount of I-131 after 32 days when I-131 initially contains 20g…

Q: Beginning with 100 g of iron-55, calculate how much remains after 7.7 years.  The half-life of…

A: The time taken during a reaction to reduce the concentration of a reactant to half of its initial…

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A: Answer: Since, nuclear reactions are first order reactions, therefore to solve this question we will…

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A:

Q: A radioactive isotope has a half-life of 12.0 seconds. How much of a 100 gram sample is left after…

A: Given  Initial Mass of Sample ( A)0  = 100 gram  Half life time ( t1/2)   = 12 sec  Time ( t ) = 36…

Q: The radioactive isotope Sr decays by electron capture. If the mass of a sample of strontium-80…

A:

Q: The half-lives of different medical radioisotopes are given in the table. If the initial amount of…

A: Radioactive decay follows First order kinetics .Initial amount of iodine-131 is 32 mCiHalf-life of…

Q: A solution of sodium iodine containing the radioactive isotope Iodine-131 was given to a patient. If…

A:

Q: Carbon-15 has a half-life of 2.5 seconds. Suppose we have a sample containing 200 mg of carbon-15.…

A: In this question, we will determine the how much mass of C-15 will remain after 5second. Given that,…

Q: Half life iridium 192 is 106.51 days. How many days are required for 60 mg to decay to 7.5 mg

A:

Q: If the initial sample is  1.25 g,  what mass of the original iridium‑192 remains after  65  days?…

A: Mass of sample =1.25 g Time, t = 65 days Mass remained = 0.675 g

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: Given Half life of Radon -222 ( t1/2 )  = 3.82 days  Initial amount of isotope ( A0 )= 33.5 mg  Time…

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A: For the Potassium-44,  Half life, t1/2 = 22 min Initial amount of Potassium-44, A0 = 64 mg After…

Q: The radioisotope radon-222 has a half-life of 3.5 days. How much of a 21 198.6 g sample of radon-222…

A:

Q: The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope…

A:

Q: How long would it take, in minutes, for the amount of lead-196 to decrease from 80.0 mg to 10.0 mg?

A: Since we know that radioactive isotope decay occurs by first order reaction . So using half life…

Q: that reads 452 g. How much sample is left after half an hour? 5.00 g 90.4 g 14.1 g 75.3 g

A:

Q: 145 g sample of radioactive has a half live of 6.4 days how many g of material is left are 2 half…

A: The time required to disintegrate the molecule to half of its initial concentration is called the…

Q: The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope…

A: This problem is based on Nuclear Chemistry.Here, we have to find the final amount ofargon-44 in the…

Q: The half-life of a radioactive material is 18.23 hours. If you measure 59.33 grams of the sample…

A:

Q: Iodine-131 has a half-life of 8.0 minutes. How many half lives will pass in 120 minutes?

A: Half life is defined as the time required for a substance to reduce to half of it's initial…

Q: Lead-211 is a radioactive isotope with a half life of 36.1 minutes.  How long will it take for only…

A: Chemical kinetics is branch of chemistry that deals with rates of chemical reactions.

Q: A radioactive sample contains 2.45g. How much willl remain after 11.4 days? (Half life is 3.8 days)

A:

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

A: