6.13 Using carbon-14 labeled AIBN as an initiator, a sample of styrene is polymerized to an average degree of polymerization of 1.28x104. The AIBN has an activity of 8.97x10' counts per minute per mol in a scintillation counter. If 5.0 grams of the polystyrene show an activity of 315 counts per minute, determine the mode of termi- nation of polystyryl radicals.

Q: Hydrogen peroxide and the iodide ion react in acidic solution as follows:

A:

Q: The half-life of carbon-14, used in rad iocarbon dating, is 5730 years. What i s the decay constant…

A: Given -->  Half life (t1/2)= 5730 years = 1.81 x 1011 s Decay constant (k) = ?

Q: Catalysts decrease the activation energy which leads to increase the reaction rate * True O False…

A: A catalyst is a substance that can be added to a reaction to increasing the reaction rate without…

Q: 9.) Strontium 90 is a major component of the detonation of nuclear explosives: it is I dangerous…

A: We know that no of atoms  N Present at time t  are given as N= N° e-kt where N° are the initial…

Q: 6.7 A neutral K meson decays in flight via K° n*. If the negative pion is produced at rest,…

A:

Q: 3.8. The half-life of 109Tc, a ß- emitter, is 15.8 s. a). How many atoms of 10Tc are present in a…

A:

Q: 7. The age of an ancient tree trunk is estimated using radiocarbon dating. If the tree gives 3.75…

A:

Q: Gallium-67 is used medically in tumor- seeking agents. The half-life of gallium- 67 is 78.2 hours.…

A:

Q: How much free energy is required for a given reaction to return to equilibrium if Q=19.1 and K=9?…

A:

Q: The half-life of 32P is 14.3 days. You count a sample containing 32P and obtain 32,450 cpms. You add…

A: Radioactivity refers to spontaneous disintegration of a substance on itself. The radioactivity of a…

Q: Suggest a stripping reaction involving 101Ru as a target isotope

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: In the case of multiplication and division, the answer should be in minimum significant figures of…

Q: 7.2.5 moles of Ni-56 initially exist. Find the number of moles of Co-56 and Fe-56 after 20 days.…

A: please put the link properly(extra information),I will solve your doubt for sure. Thanks and happy…

Q: olve the problem. 2) The decay of 989 mg of an isotope is given by A(t)= 989e-0.022t, where t is…

A:

Q: Predict by what mode(s) of spontaneous radioactive decay each of the following unstable isotopes…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Despite its toxicity, arsenic is an essential element. If humans do not consume at least 40…

A: Arsenic element is represented by symbol As. Most forms of arsenic are toxic in comparision of…

Q: The rate of radioactive decay follows first-order kinetics where the rate of decay is proportional…

A: First order kinetics of reaction

Q: Match the parts of the reaction to their labels: A C H,0,- 2H,0 + 0, catalase water B + hydrogen…

A: Answer:- This question is answered by using the simple concept of reaction conditions and the name…

Q: Above is an uncommon amino acid called dehydrobuyterine. Three parts of the molecule are circled.…

A: Amino acids are the structural units of proteins which can be bound together by peptide bonds and…

Q: 20.91 The photochemical decomposition of HI proceeds by the mechanism HI+ hv→ H+ I H + HI→H₂ + I I +…

A:

Q: A blood sample is assayed for creatine kinase activity. It is found that after 5 minutes of…

A: •Here is the data for creatinine kinase:-=>Product formed = 13.7 umol=>Time = 5 minutes

Q: Please solve question number 8 and 10.

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: 2.24 What are the partial half-lives for the two major modes of decay for Cl?

A: 2.2 Partial half-lives for the two major modes of decay for 36Cl are 3.06 x 105 years and

Q: Help determine the General Equations and Purpose of the Test 1. Reaction of acid with ROH 2. Chromic…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first 3 sub-parts of…

Q: The activity after irradiation is 10 Ci (Hf-175, T1/2 = 70 d). I. What amount must be sent (in ml)…

A: I. To calculate the amount of Lu-177 solution that must be sent to the customer to achieve 1 Ci (37…

Q: The radioisotope 14C (half life = 5730 years) is used for carbon dating. What is the first order…

A: Answer:- This question is answered by using the simple concept of calculation of rate constant for…

Q: P18.19 A technique for radioactively labeling proteins is electrophilic radioiodination in which an…

A: I131 is a radioactive substance with half-life, t1/2 = 8.02 days

Q: Given that the scattering cross-section of 1 MeV neutron and proton is 10 b, estimate the…

A:

Q: Question is attached

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

Q: Some Radioactive Isotopes Useful in Medical Imaging Mode of Isotope Decay Half-life Use in Medical…

A:

Q: What is the binding energy in kJ/mol nucleons for chlorine-35? kJ/mol nucleons 17;H+ 18;n→Ci The…

A: Since you have posted more than 1 question so we can do only first question for you. If you want…

Q: Sodium-24 (ty = 15h) is used to study blood circulation. If a patient is injected with aqueous…

A: The activity use the first order formula , we can calculate it for 4 days.

Q: Imagine a similar experiment using the radioisotope 3 H, which is called tritium and is usually…

A: Tritium (T) is the radioisotope of hydrogen  31H.       Reaction between CH3COOH and TOCH3 :…

Q: The half-life for the (first-order) radioactive decay of l4C is 5730 years (it emits ß rays with an…

A: Radioactive decay of 14C found in living trees, having half-life as 5730 years, whose age is to be…

Q: Phosphorus-32 (0) decays by beta emission to form sulfur-32 (©). How many half-lives have passed in…

A: Phosphorus-32  decays by beta emission to form sulfur-32. We have to find How many half-lives have…

Q: Which figure (a or b) could you use the steady-state approximation and it would be a good…

A:

Q: An isotope dilution experiment was performed to determine the chloride content in a given samples. 5…

A: Given  An isotope dilution experiment was performed to determine the chloride content in a given…

Q: Consider the transition with a frequency of 6.00*10^14 Hz (Hz=s-1). What is the molar transition…

A: The process of excitation of electrons from a lower energy level to a higher level in a molecule is…

Q: A novel form of uranium oxide (U3Og, density 8.5) is being considered for use as fuel for a research…

A: The main aim of this question is to determine the mass fraction of 235U, the mean free path of…

Q: Write the nuclear equation for the nuclear reaction in which a nuclei undergoes ß- decay and changes…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: In a laboratary, 640 mg of iodine-131 is stored for 30 days and only 40 mg reamining. a)  Determine…

A:

Q: An ancient shroud is found to have a C-14 activity of 9.7 disintegrations per minute per gram of…

A: Given: The initial decay rate of C-14 (Nt) is 9.7 disintefrations per minute The decay rate of…

Q: An ancient shroud is found to have a C-14 activity of 9.7 disintegrations per minute per gram of…

A: Given that : The initial decay rate of carbon of cloth = 9.7 dis/min. The decay rate of carbon for…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.