What is the exposure rate at 1.1 m from a 10 mCi source of Cs-137? Half-life...
What is the exposure rate at 1.1 m from a 10 mCi source of Cs-137? Half-life is 30yrs, photon energy is 0.662 MeV, Half-value layer is 11mm, Exposure Rate Constant is 13.07
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What is the exposure rate at 1.1 m from a 10 mCi source of
Cs-137? Half-life...
Please show all work. 5. What is the activity of a Cs-137 source on Jan 11,...
Please show all work.
5. What is the activity of a Cs-137 source on Jan 11, 2010. The original activity was 25 mCi on Dec 4, 2000. Page 16 of your book: A= Aoe® A,-Original Activity A- final activity λ= decay constant T1/2 = ln2 / λ [ In2= 0.693]
The 137Cs source used for gamma rays in the Compton scattering experiment has a half-life of 30.1...
1.
2.
The 137Cs source used for gamma rays in the Compton scattering experiment has a half-life of 30.17 years. Suppose that the initial absolute activity of a source N years ago was lo 5.46 mCi (milli-Curies) 202 million disintegrations/s. Suppose that the initial absolute activity of the 137Cs source (lo 5.46 mCi) occurred N-16.3 years ago. The expected absolute activity today, N years later, is mCi. mci You want to deduce the total gamma-ray activity from the 137Cs source...
(50%) Problem 1: A 60Co source (which has a half-life of 5.2714 y) is labeled 4.00...
(50%) Problem 1: A 60Co source (which has a half-life of 5.2714 y) is labeled 4.00 mCi, but its present activity is found to be 1.1 x 10' Bq Randomized Variables R = 1.1 × 107 Bq 50% Part (a) What is the present activity in mCi? Grade Summary 0% 100% Potential cosO cotanasin acos( atan0 acotansinhO coshO tanh cotanhO O Degrees O Radians in tan 兀 Submissions Attempts remaining: 7 (3%per attempt) detailed view 0 Submit Hint I give...
please answer as much as you can, i will rate. 2. Circle the designator in front of the correct answer() from the list following each question or statenent. (o) A radioactive sample with Ti 10 hou...
please answer as much as you can, i will rate.
2. Circle the designator in front of the correct answer() from the list following each question or statenent. (o) A radioactive sample with Ti 10 hours earlier? (10 pointa 2h has an activity of I mCl sow. What wns ite activity i. 32.0 mCi ii. 10.0 mCI ii. 6.0 mCi iv. 2.0 mC v. 0.2 mC (b) The water in the primary loop of a typical PWR is used as...
4) What is the half-life of a second order reaction with the rate constant 0.0271 m...
4) What is the half-life of a second order reaction with the rate constant 0.0271 m 's and the initial concentration 0.902M?
1. What is the half-life of a first-order reaction with a rate constant of 1.90×10−4 s−1? Express...
1. What is the half-life of a first-order reaction with a rate constant of 1.90×10−4 s−1? Express your answer with the appropriate units. 2. What is the rate constant of a first-order reaction that takes 244 seconds for the reactant concentration to drop to half of its initial value? 3. A certain first-order reaction has a rate constant of 1.80×10−3 s−1. How long will it take for the reactant concentration to drop to 18 of its initial value?
Consider the radioisotope ²⁴⁰Pu (half life = 6.56 × 10³). What is the first order rate...
Consider the radioisotope ²⁴⁰Pu (half life = 6.56 × 10³). What is the first order rate constant for ²⁴⁰Pu?
55) The rate constant for a first-order reaction is 0.54 s-1. What is the half-life of...
55) The rate constant for a first-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M? 56) The rate constant for a zero-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M? 57) The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given below. If the rate of appearance of Cr2(SO4)3...
مس What is the half-life of the reaction using 2.5 x 10-5 M as the initial...
مس What is the half-life of the reaction using 2.5 x 10-5 M as the initial concentration of crystal violet? Paste an image any calculation you performed in the space below. مس What is the half-life of the reaction using 2.5 x 10-5 M as the initial concentration of crystal violet? Paste an image any calculation you performed in the space below. Verdana 12 BIU - ab x, XA A.P.A. A Α' Α' AaBbcc AaBbcc AaBb C 1 Normal T...
2. Answer the following questions by connecting the half-life of each first-order reaction to the rate...
2. Answer the following questions by connecting the half-life of each first-order reaction to the rate constant. a. The rate constant of a first-order reaction is 2.43 × 10–2 min–1. What is the half-life of the reaction? (2 points) b. A first-order reaction has a rate constant of 0.547 min-1. How long will it take a reactant concentration 0.14 M to decrease to 0.07 M? (2 points) c. The half-life of a first-order reaction is 5.47 min. What is the...
Please show all work.
5. What is the activity of a Cs-137 source on Jan 11, 2010. The original activity was 25 mCi on Dec 4, 2000. Page 16 of your book: A= Aoe® A,-Original Activity A- final activity λ= decay constant T1/2 = ln2 / λ [ In2= 0.693]
1.
2.
The 137Cs source used for gamma rays in the Compton scattering experiment has a half-life of 30.17 years. Suppose that the initial absolute activity of a source N years ago was lo 5.46 mCi (milli-Curies) 202 million disintegrations/s. Suppose that the initial absolute activity of the 137Cs source (lo 5.46 mCi) occurred N-16.3 years ago. The expected absolute activity today, N years later, is mCi. mci You want to deduce the total gamma-ray activity from the 137Cs source...
(50%) Problem 1: A 60Co source (which has a half-life of 5.2714 y) is labeled 4.00 mCi, but its present activity is found to be 1.1 x 10' Bq Randomized Variables R = 1.1 × 107 Bq 50% Part (a) What is the present activity in mCi? Grade Summary 0% 100% Potential cosO cotanasin acos( atan0 acotansinhO coshO tanh cotanhO O Degrees O Radians in tan 兀 Submissions Attempts remaining: 7 (3%per attempt) detailed view 0 Submit Hint I give...
please answer as much as you can, i will rate.
2. Circle the designator in front of the correct answer() from the list following each question or statenent. (o) A radioactive sample with Ti 10 hours earlier? (10 pointa 2h has an activity of I mCl sow. What wns ite activity i. 32.0 mCi ii. 10.0 mCI ii. 6.0 mCi iv. 2.0 mC v. 0.2 mC (b) The water in the primary loop of a typical PWR is used as...
4) What is the half-life of a second order reaction with the rate constant 0.0271 m 's and the initial concentration 0.902M?
55) The rate constant for a first-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M? 56) The rate constant for a zero-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M? 57) The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given below. If the rate of appearance of Cr2(SO4)3...
مس What is the half-life of the reaction using 2.5 x 10-5 M as the initial concentration of crystal violet? Paste an image any calculation you performed in the space below. مس What is the half-life of the reaction using 2.5 x 10-5 M as the initial concentration of crystal violet? Paste an image any calculation you performed in the space below. Verdana 12 BIU - ab x, XA A.P.A. A Α' Α' AaBbcc AaBbcc AaBb C 1 Normal T...
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