Answered: Example (3): 0.2 gram of pure potassium…

Example (3): 0.2 gram of pure potassium 40 (4®K) emit about 105 beta rays per second .Estimate its the half life ? (Avogadro's number =6.02 x1023 ).

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter31: Radioactivity And Nuclear Physics

Section: Chapter Questions

Problem 56PE: Data from the appendices and the periodic table may be needed for these problems. A 5000Ci 60Co...

See similar textbooks

Related questions

Q: 1. If a material has a half-life of 92.5 days, how long will it take for 40% of the material to…

Q: Write appropiate symbols for tin-117 nucleus using the ZAX symbolism.

Q: Example (3) : 0.2 gram of pure potassium 40 ("K) emit about 10 beta rays per second .Estimate its…

A: Mass , m = 0.2 gm Atomic weight = 40 To find = Half life

Q: The activity of a radioactive sample moving with velocity V is given by, R= R,e. A detector at a…

Q: The age of the Dead Sea Scrolls was found by carbon dating. Could this technique apply if they were…

Q: Q3: Calculate the minimum energy required to remove an alpha particle from the Uranium isotope U.

Q: Rutherfordium-261 has a half-life of 1.08 min. How long will it take for a sample of rutherfordium…

A: Given: Half life of Rutherfordium-261 t = 1.08 min.

Q: APPLICATION OF HIGHER LDE (GROWTH AND DECAY) Radium decomposes in air at a rate proportionate to…

Q: I Review I Const A sample of 1.5x1010 atoms that decay by alpha emission has a half-life of 90 min…

A: Given: half life t1/2 = 90min initial number of atoms = No=1.5*1010 atoms

Q: SCPI The The 16. number of alpha particles number of beta particles 3 B 3 2 4 D. 1 1 17. A nucleus…

Q: Actinium -227 undergoes alpha decay. Complete the reaction equation for this decay to the element…

A: Atomic number of actinium = 89 Mass number of actinium = 227 Atomic number of francium = 87 Decay…

Q: dN = - 0.075N. dt A chemical substance has a decay rate of 7.5% per day. The rate of change of an…

A: *We'll answer only the first three sub-parts since the sub-parts to be answered were not specified.…

Q: 2. Calculate the activity due to lªC in 1.00 kg of carbon found in a living organism. Express the…

A: The formula of activity is given by,

Q: Question : A water solution of the Tc-99m radiotracer has an initial radioactivity of 2 mCi/ml. The…

A: Given, Half-life of Tc-99m is t12=6 hr. Initial activity, A∘=2 mCi/ml. Time of activity, T=12…

Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5 730 yr)…

A: Determine the number of carbon molecules per mole. Determine the initial number of atoms of C-14.

Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half- life = 5 730…

A: In this question we have to find out the age of the samole in the nearest year with the help of the…

Q: 1. An ancient club is found that contains 120 g of pure carbon and has an activity of 7.5 decays per…

A: The expression for the half-life of carbon-14 is written as, Here, λ represents the decay constant…

Q: You are hired as an expert witness for the defense of an employee who is being sued for exposing his…

A: The initial number of oxygen atoms Half-life time, The time interval,

Q: Astatine-219 has a half-life of 56 seconds and undergoes α decay 97% of the time and β- decay the…

Q: Suppose that a sample of lead-214 initially has an activity of 100 Ci. The half-life of lead-214 is…

Q: Radioactive element AA can decay to either element BB or element CC.The decay depends on chance, but…

Q: If 250 mg of a radioactive element decays to 220 mg in 36 hours, find the half-life of the element.…

A: Original mass (M) = 250 mg New mass (m) = 220 mg Time taken (t) = 36 hours using radioactive decay…

Q: 4) A chemical substance has a decay rate of 9.3% per day. The rate of change of an amount, N, of the…

A: Radioactive decay follows the first-order kinetics in which the nuclei decays with time…

Q: Fluorodeoxyglucose (FDG) is a radioactive tracer element that is used for PET (Positron Emission…

Q: (a) A student wishes to measure the half-life of a radioactive substance using a small sample.…

A: Given. the counter registers 372 counts during one 5.00-min interval and 337 counts during the next…

Q: A substance decays according to the formula Q = 24(0.5)"2.4, where t is in weeks. (a) What is its…

Q: Write the equation for each of the following. (Enter your answers in the form Ax.) chemPad Help…

A: Here given two atoms . One is occurring an alpha decay and another is beta decay. We have to write…

Q: Part A 124 Cs has a half-life of 30.8 s. 55 Part B Part C Part D After how much time will the…

Q: Need Help

A: Mass, m = 73.5 kgNumber of nails, n = 1900g = 9.81 m/s2

Q: Initially 100 milligrams of a radioactive substance was present. After 5 hours the mass had…

A: Initially 100 milligrams of a radioactive substance was present. After 5 hoursthe mass had decreased…

Q: 3. If a sample emits 2000 counts per second when the detector is 1 meter from the sample, how many…

Q: Astatine-219 has a half-life of 56 seconds and undergoes α decay 97% of the time and β- decay the…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: If the minimum usable activity is 10 mCi, how long after delivery at the hospital is the sample…

A: Initial activity of C137s : Ao = 125 m Ci = 0.125 Ci Half-life of sample: ζ = 32.8 hours Activity at…

Concept explainers

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.

Question

100%

Example (3) : 0.2 gram of pure potassium 40 ("K) emit about 105 beta rays
per second .Estimate its the half life ? (Avogadro's number 6.02 x1023 ).

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3 Result

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Data from the appendices and the periodic table may be needed for these problems. 44. An old camp?re is uncovered during an archaeological dig. Its charcoal is found to contain less than 1/1000 the normal amount of 14C. Estimate the minimum age at the charcoal, noting that 210 = 1024.
(a) Calculate the radius of 58Ni, one of the most tightly bound stable nuclei. (b) What is the ratio of the radius of 58Ni to that at 258Ha, one of the largest nuclei ever made? Note that the radius of the largest nucleus is still much smaller than ?le size of an atom.
What is the mass of 60Co in a cancer therapy transillumination unit containing 5.00 kCi of 60Co?
Data from the appendices and the periodic table may be needed for these problems. Unreasonable Results (a) Repeat Exercise 31.57 but include the 0.0055% natural abundance of 234U with its 2.45105y halflife. (b) What is unreasonable about this result? (c) What assumption is responsible? (d) Where does the 234U come from if it is not primordial?
Data from the appendices and the periodic table may be needed for these problems. A 5000Ci 60Co source used for cancer therapy is considered too weak to be useful when its activity falls to 3500 Ci. How long after its manufacture does this happen?
Data from the appendices and the periodic table may be needed for these problems. (a) Natural potassium contains 40K, which has a halflife of 1.277109y. What mass of 40K in a person would have a decay rate of 4140 Bq? (b) What is the fraction of 40K in natural potassium, given that the person has 140 g in his body? (These numbers are typical for a 70kg adult.)
To obtain the most precise value of BE from the equation BE=[ZM(1H)+Nmn]c2m(AX)c2, we should take into account the binding energy of the electrons in the neutral atoms. Will doing this produce a larger or smaller value for BE? Why is this effect usually negligible?
What characteristics of radioactivity show it to be nuclear in origin and not atomic?
Why is the number of neutrons greater than the number of protons in stable nuclei that have an A greater than about 40? Why is this effect more pronounced for the heaviest nuclei?
The ruins of the Chernobyl reactor are enclosed in a huge concrete structure built around it after the accident. Some rain penetrates the building in winter, and radioactivity from the building increases. What does this imply is happening inside?
(a) Calculate the number of grams of deuterium in an 80.000L swimming pool, given deuterium is 0.0150% of natural hydrogen. (b) Find the energy released in joules if this deuterium is fused via the reaction 2H+2H3He+n. (c) Could the neutrons be used to create more energy? (d) Discuss the amount of this type of energy in a swimming pool as compared to that in, say, a gallon of gasoline, also taking into consideration that water is far more abundant.
Calculate the activity R , in curies of 1.00 g of 226Ra. (b) Explain why your answer is not exactly 1.00 Ci, given that the curie was originally supposed to be exactly the activity of a gram of radium.