Phosphorus-32 is a radioactive isotope with a half-life of 14.3 d (d = days). A biochemist has a vial containing a compound of phosphorus-32. If the compound is used in an experiment 5.90 d after the compound was prepared, what fraction of the radioactive isotope originally present remains? Suppose the sample in the vial originally contained 0.300 g of phosphorus-32. How many grams remain after 5.90 d? Fraction P-32 nuclei remaining =  blank blank=  g P-32 remaining

Q: Phosphorus-32 is a radioactive isotope with a half-life of 14.3 d (d = days). A biochemist has a…

A: A radioactive decay follows the first order kinetics where the rate of the reaction depends on the…

Q: The half life of an isotope is 43 seconds.  How long does it take 100.00 g of that isotope to decay…

A: Given that  Initially weight of isotope sample = 100.0 gm initially number of atoms of isotope No=…

Q: In addition to C-14, K-40 is often used for archeological dating. K-40 decays to Ar- 40 by positron…

A: The rate of radioactive decay has been proven to be of first order kinetics. Using the understanding…

Q: Radioactive tungsten-178 decays with a half-life of 21.6 days. (a) What is the value of k in s-1?…

A: a) we have  half life of W - 178 = 21.6 days = 21.6 * 24 hours = 518.4 hours = 518.4 * 3600 seconds…

Q: Answer  4460 years

A: Expression for half-life period of radioactive element is given as,

Q: You take a course in archaeology that includes field work. An ancient wooden totem pole is excavated…

A: Given: The beta decay rate is measured at = 690 decays/min. sample from the totem pole contains =…

Q: a) If an object that was once living died 35,500 years ago, what is the exact percentage of the 14C…

A: a. The half life equation for decay is shown below: Where; Cfinal represents final concentration…

Q: 1. A 1 kg mass of radioactive material was left to decay in a laboratory. After 12 years, the…

A:

Q: Carbon-14 has a half-life of 5730  years . In a plant fossil, you find that the  14C  has decayed to…

A:

Q: The initial amount of the radioactive material V in a rock is determined to be 6.78 mg. Only 1.46 mg…

A: final answer is = 5.3200 mg

Q: Technetium-99 (half-life = 6.01 h) is used in medical imaging. How many half-lives would go by in…

A: a) Given t1/2 = 6.01 h 100% →6.01 h 50 % →6.01 h 25 % →6.01 h12.5 % →6.01 h 6.25 % →6.01 h 3.125 %…

Q: Iodine – 125 emits gamma rays when it decays to Tellerium-125 and has a half-life of 60 days. If a…

A: The radioactive decay always follows the first order kinetics. The radioactive decay of I-125 must…

Q: Yttrium-90 is a radioactive isotope used to treat tumors in the liver. 90 Y has a half-life of 2.67…

A: Given : Half life of 90Y = 2.67 days. And mass of 90Y remaining after 1.03 days = 4.02 µg

Q: A hepatobiliary scan is a common technique used to assess the functionality of a patient's…

A:

Q: phosphorus-32 is a radioactive isotope with half-life of 14days. a biochemist has a vial containing…

A: The radioactive isotopes follows the first order reactions, which is dependent upon the…

Q: Radioactive tungsten-178 decays with a half-life of 21.6 days. (a) What is the value of k in s-12…

A: Given: The half-life of tungsten-178, t1/2 = 21.6 days Seconds in a day are given as: 1 day =…

Q: 90Sr is an isotope produced from atmospheric testing of nuclear bombs. If nuclear testing was…

A: Half  life = 28.5 years

Q: How many half-lives have passed in each of the following situations? (a) Initially the sample is…

A: SOLUTION: Step 1: (a). Half-life is the interval of time required for one-half of the atomic nuclei…

Q: 8. Radioactive Iodine-131, with a half-life of eight days, is a common fission product and thus is…

A: The expression for the first order radioactive decay is shown below: Where; t = time A0 = initial…

Q: a substance with a half-life of 23.1049 seconds. you start with 12 mg of the substance (a) write the…

A: The decay of substance follow exponential rule. Half life is defined as the time required by any…

Q: Radioactive decay can be described by the following equation In A = In Ao – kt where Ao is the…

A: Given first order equation for the radio active decay is…

Q: #5 A rock contains 0.257 mg of Pb-206 for every milligram of U-238.The half-life for the decay of…

A: Radioactive decay follows first order kinetics. The integrated rate law is as below: kt=lnAoA Here,…

Q: 24 Am is used in many home smoke alarms. It has a decay half-life of 457 years. How long does it…

A: All radioactive decay follows first order kinetics. So in order to solve for the time required we…

Q: Francium-223 is a radioactive isotope with a half-life of about 22 minutes. How much time will it…

A:

Q: lodine - 125 emits gamma rays when it decays to Tellerium-125 and has a half-life of 60 days. If a…

A:

Q: Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of cesium-137…

A: Concept based on half-life of radio active isotopes.

Q: The half-life of Palladium-100 is 4 days. After 24 days a sample of Palladium-100 has been reduced…

A: N  = N0 e-λt  N0  = Initial mass of the sample N = Mass of the sample after a time 't' λ = decay…

Q: Americium-241 is used in smoke detectors. If 15% of the americium-241 in a smoke detector decays in…

A:

Q: Iodine-125 (¹251) is used to treat, among other things, brain tumors and prostate cancer. It decays…

A:

Q: Chemistry An unknown radioactive substance has a half-life of 3.20 hourshours . If 34.7 gg of the…

A: All natural and artificial radioactive decays follows first order kinetics The integrated rate…

Q: The half-life of a radioactive nucleus is 1.5·10 -8 s. What is this half-life in milliseconds (ms),…

A: The half-life of the given radioactive nucleus is 1.5×10-8 s. This half-life can be converted into…

Q: Phosphorus-32 is a radioactive isotope with a half-life of 14.3 d (d = days). A biochemist has a…

A: Radioactive decomposition follows first order kinetics. Integrated rate law for first order is

Q: 1.Write the nuclear equation for the radioactive decay of radium-226 by alpha decay.

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: What is the half-life of an isotope that decays to 3.125% of its original activity in 63.6 h?…

A: We know that,  N(t) = N0(1/2)t/t1/2 No = initial amount  N(t) = amount of substance at time t t1/2 =…

Q: The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced…

A: The initial mass of the sample of palladium-100, No, in mg is calculated as shown below where t1/2…

Q: Radioactive tungsten-178 decays with a half-life of 21.6 days. (a) What is the value of k in s"17…

A: Answer-a Relation between half life and decay constant is: λ=0.693t1/2 value of half life given is…

Q: How many half-lives have passed in each of the following situations? How much of a 48.0 g…

A: 1. The given half life of iodine-134 is 50 minutes. The total number of half-lives observed in 150…

Q: (c ) Iodine-131 has a half-life of 8 days. How many grams of I-131 in a 4.0 g sample remain after…

A: (c) The amount of the isotope that remains after given decay time is calculates by using below…

Q: Iodine-131 is a radioactive isotope. After 6.00 days, 59.6% of a sample of 13I remains. What is the…

A:

Q: The radioactive isotope 212Pb has a half-life of 10.64 h. A sample containing this isotope has an…

A:

Q: 4. The half-life of radioactive radium-224 is 3.50 days. What was the original mass if 0.200 g…

A:

Q: If a tree dies and the trunk remains undisturbed for 1.015 x 104 years, what percentage of the…

A:

Q: 3. Natural thorium consists entirely of the alpha-radioactive isotopes 232Th which has a half-life…

A:

Q: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 91.3 g of ²P, how…

A: The answer to the following question is- half life = 14.3 days ,

Q: The ¹H nucleus is composed of a single proton and therefore has a mass loss of 0 g/mol. Select the…

A:

Q: If 2.4 x 1010% of the atoms of a radioactive isotope disintegrate in 1.0 yr, what is the decay…

A: Since for the decay reaction, the relationship between the final % and initial % is given by…