Answered: In 4 years, 3/4 of nuclei of a given…

In 4 years, 3/4 of nuclei of a given radioactive substance is decayed. What is the half- life of the substance? a) 1 year b) 2-year c) 3-year d) 4 year e) none of these

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter13: Nuclear Structure

Section: Chapter Questions

Problem 12Q

See similar textbooks

Related questions

Q: 18) Calculate the binding energy per nucleon of Mercury-200 (Hg-200 has an atomic number of 80 and…

Q: 15O and 131I are isotopes used in medical imaging. 15O is a beta-plus emitter, 131I is a beta-minus…

A: Beta plus and beta minus reaction can be expressed as

Q: In a gamma decay process __________. A) a high-energy alpha particle is produced B) a parent…

A: Given In a gamma decay process __________.

Q: Radon-222 decays at a continuous rate of 17.3% per day. Suppose a scientist begins with a sample of…

Q: 2. An isotope of sodium 24N a has a half-life of 15 hours. A sample of this isotope has a mass of…

Q: As of 2013, the Palo Verde Generating station in western Arizona is the largest nuclear plant in the…

Q: A sample of radioactive material contains 1000 atoms. A half-life of this material is 2 days. How…

Q: An unknown radioactive element decays into non-radioactive substances. In 360 days the radioactivity…

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

Q: Calculate the mass of a sample of (initially pure) 40K that has an initial decay rate of 1.70 * 105…

A: The initial decay rate,

Q: isotope polonium-209 undergoes alpha decay. Write the reaction equation and determine the identity…

A: In alpha emissions mass number decreases by 4 and atomic number decreases by 2.

Q: 4. A radioactive sample, with an initial mass of 28 mg, has a half - life of 5 days. What is the…

Q: The half-life of a radioactive isotope is the amount of time it takes for a quantity of radioactive…

A: The amount of radioactive material left after decay for some time is given by A = Aoe-λt, where A =…

Q: Match each illustration or description to the corresponding type of radioactive decay. Answer…

A: The emitted particle from the alpha decay has a +2 electric charge. An electron is emitted from the…

Q: Radioactive materials are composed of nuclei that are stable .A yes .B no .C .D

A: An atom is stable if the forces among the particles that makeup the nucleus are balanced. An atom is…

Q: QI: A hospital technician is working with a radioactive source. The graph below shows the activity…

A: The given graph is shown below

Q: A radioactive sample has an activity R. For each of the following changes, indicate whether the…

A: Activity of radioactive decay is the number of disintegration per second. It can be expressed as

Q: The half-life of a radioactive isotope is the amount of time it takes for a quantity of radioactive…

A: Ans (a) in this question half life of c-14 is given as 5230 years so Thalf=5230y and we know the…

Q: 18. 2. The half-life of a radioactive sample is 30 minutes. If the sample originally contains 4x10°…

A: The half-life of a radioactive isotope is the amount of time it takes for one-half of the…

Q: radioactive isotope decays into thorium-232 and an alpha particle. What was the original particle

A: Total atomic number and mass number should be equal to both sides of equation.

Q: Two radioactive nuclei, A and B have the same amount at the beginning. After 15 days, the number of…

A: The half life of B is longer than A.

Q: Jai was measuring the radioactivity of different radioactive isotopes. Isotope A had a starting…

Q: Supposed that a radioactive substance has decayed until only of 1/8 of it remains. How many…

A: let initial number of Nucleons= N0 remaining number of Nucleons= N =N08

Q: The half-life of a certain radioactive element is such that 7/8 of a given quantity decays in 12…

A: The amount of radioactive material left after decaying for a certain time period is given by A =…

Q: The radioactive isotope (Nb) has a half-life of 35 days. A sample containing this isotope has an…

A: Write the expression for the decay constant.

Q: Name two isotopes that undergo nuclear fission.

A: The two isotopes that undergo nuclear fission are Plutonium - 239 and Uranium - 235.

Q: nuclear/ radioactive decay may be best expressed as Group of answer choices N = No e-1/λλt No = N…

Q: The carbon content of living trees includes a small proportion of C-14, which is a radioactive…

Q: The half-life of polonium is 139 days, but your sample will not be useful to you after 94% of the…

A: Calculate the decay constant of polonium. λ=ln2t1/2=ln2139 day=4.986×10-3 day-1 Here, λ is the decay…

Q: The isotope 1F has a half-life of 109.8 min. Determine the time interval (in min) required for the…

A: Given data The half-life of fluorine is t1/2=109.8 min The decrease in the sample is N=29 %No=0.29No

Q: 6. Which of the following statement is NOT true about half-life? a. It is the amount of time in…

Q: Which of the following sub-atomic entities is involved in radioactive decay? O All of these can be…

A: In radioactive decay until stable nuecleus by emitting alpha, beta, Gama particles they become…

Q: State which of the following statements are true and which are false: a) After two half-lives, all…

A: NOTE: As per guidelines, I can solve first question. If you need help with other questions kindly…

Q: By natural radioactivity, U-238 emits an alpha particle. The heavy daughter nucleus is called…

A: In alpha decay, the atomic number of the daughter nucleus will be less than that of the parent…

Q: n 1986 the Chernobyl nuclear power plant exploded, and scattered radioactive material over Europe.…

A: Half life of Cesium-137 t1/2=30 years. Let initial amount of Cesium nuclei be No. We need to find…

Q: Carbon has three naturally occurring isotopes. The isotope, carbon-14, is radioactive. An atom of…

A: The answer is given below As per the policy I can solve only one question

Q: Radioactive isotopes often occur together in mixtures. Suppose a 100 g sample contains 131Ba, with a…

Q: A radioactive sample has an activity R. For each of the following changes, indicate whether the…

A: At time t, number of radioactive nuclei = Nt

Q: An oxygen-15 nucleus, 0, decays to another atomic nucleus by emitting a B+ ray. What is the other 15…

Q: 6. The decay constant of radioactive source that have a half-life of 80 sec is equal to ----s-¹ A)…

Question

In 4 years, 3/4 of nuclei of a given radioactive substance is decayed. What is the half- life of the substance?

a) 1 year b) 2-year c) 3-year d) 4 year e) none of these

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

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

A radioactive sample has an activity R. For each of the following changes, indicate whether the activity would increase, decrease. or remain unchanged. Indicate your answers with I, D, or U. (a) The number of radioactive nuclei in the sample is doubled. (b) The half-life of the radioactive nuclei is doubled. (c) The decay constant is doubled. (d) A time period equal to two half-lives is allowed to elapse.
A sample of radioactive material is obtained from a very old rock. A plot InA verses t yieldsa slope value of 109s1 (see Figure 10.10(b)). What is the half-life of this material?
A radioactive sample initially contains 2.40102 mol of a radioactive material whose half-life is 6.00 h. How many moles of the radioactive material remain after 6.00 h? After 12.0 h? After 36.0 h?
A radioactive sample has an activity R. For each of the following changes, indicate whether the activity would increase, decrease. or remain unchanged. Indicate your answers with I, D, or U. (a) The number of radioactive nuclei in the sample is doubled. (b) The half-life of the radioactive nuclei is doubled. (c) The decay constant is doubled. (d) A time period equal to two half-lives is allowed to elapse.
Which of the following is not conserved in all nuclear reactions? (10.4) (a) nucleons (b) mass number (c) atomic number (d) neutron number
If no more people were to be born, the law of population growth would strongly resemble the radioactive decay law. Discuss this statement.
Actinium-225 (89225Ac) undergoes alpha decay. (a) Write the equation. (b) The daughter formed in part (a) undergoes beta decay. Write the equation.
Use the graph in Fig. 10.24 to find the half-life of isotope A. All you need is a sound understanding of the definition of half-life. Figure 10.24 See Exercise 19.
Suppose a person swallows some radioactive material by accident. What information is needed to be able to assess possible damage?