Iron-58 and bismuth-209 fuse into a large nucleus plus a neutron. Write the reaction equation and determine the identity of the resulting nucleus. 2. A Geiger counter registers a count rate of 4,000 counts per minute from a sample of a radioisotope. Twelve minutes later, the count rate is 1,000 counts per minute. What is the half-life of the radioisotope?

Q: 40 The count rate measured when near a radioactive source drops from 542 counts per minute to 94…

A: Initial count rate = 542 count per minuteFinal count rate = 94 count per minute Background rate = 30…

Q: Two radioactive sources M and N, have half-lives of 4.0 hours and 6.2 hours, respectively. The…

A:

Q: If a radioactive isotope of thorium (atomic number 90, mass number 232) emits 4 alpha particles and…

A: When any radioactive elements emit alpha particle, it's atomic number reduces by 2 and mass number…

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

A: The number of carbon nuclei in the sample can be found using the equation,

Q: please answer D 2. Caesium-137 decays via β - emission with a half-life of 30.17 years. A sample is…

A:

Q: Sodium-24 is a radioisotope used for examining circulation. a. Write a balanced nuclear equation for…

A: The radioactivity equation is  N = No12n where, No is the initial number of atoms, N is the atoms…

Q: Suppose that you are given a 200 gram sample of a radioactive substance with a half-life of 45 days.…

A:

Q: 10) Binding energy A) Refers to the difference between the total mass of the nucleus and the…

A: When nucleons are brought together to form nucleus, then nuclear force acts between them. Due to…

Q: [08] A building is contaminated with radon (" Rn ,m=222.017 570u ), a radioactive gas with a half-…

A: Radioactivity is the process of decay of heavy nucleus by the emission of energy from unstable atoms…

Q: 1. Neutron captured by beta decay happened to 238Np93 is irradiated with neutrons.  a. Write the…

A: Beta decay

Q: 47. A radioactive source consists of a mixture of two isotopes P and Q P has a half-life of 60…

A:

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: The half-life of iodine-131 (131I)(131I), an isotope used in the treatment of thyroid disorders, is…

A: Write the relation between decay constant to the half life.

Q: 1 Nuclear Radius The density of nuclear matter can be estimated by assuming A spherical nucleons of…

A: As radius is given as r=r0A13, where r0 is a constant equal to1.2×10-15 m and A is number pf…

Q: Which expression correctly describes the radioactive decay of a substance whose half-life is T?

A: Radioactive decay is given by , Nt = N0e-λt And rate constant λ = ln2t1/2 = ln2T

Q: When a nucleus decays by emitting an alpha particle, what is the atomic number of the resulting…

A: Given: 88 Ra226

Q: Two nuclei have mass numbers in the ratio 2 : 5. What is the ratio of their nuclear densities?

A:

Q: What is the nuclear equation for Gd (alpha decay)? 64

A: Answer C

Q: @ What is Ca) an alpha particle ? 6) a beta particle? © a gamma ray? d) an X-ray? C) a daughter…

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

Q: RADIOACTIVITY. LAW OF RADIOACTIVE DECAY Activity units: 1 Ci = 3.7 × 1010 Bq 1. Nuclear decay law: N…

A:

Q: If a rock containing U-238 initially reads 41.2 counts per minute on a Geiger counter, what will its…

A: The reading after 6 weeks will be 41.2 counts per minute

Q: 9) Derive the radioactive decay equation from the fact that the decay rate in nuclei is proportional…

A:

Q: Two nuclei have mass numbers in the ratio 8:125. What is the ratio of their nuclear radii?

A: The nuclear radius is calculated by using the formula R=R0A13 , where R0=1.2×10-15 m is the constant…

Q: 37 184 H.W: Preparing a pure sample of a radioisotope of argon 1Ar containing 2.5x1016 nuclei. After…

A:

Q: Calculate the activity due to 14C in 1.00 kg of carbon found in a living organism. Express the…

A: The formula of activity is,

Q: You can sometimes find deep red crystal vases in antique stores, called uranium glass because their…

A: Given, Mass of uranium in sample,

Q: What fraction of radioactive nucleus sample survive after two half-lives?

A: Half-life is the time taken by the radioactive element to become the half of the original amount as…

Q: After long effort, in 1902 Marie and Pierre Curie succeeded in separating from uranium ore the first…

A: a) The mass of Ra is given by, Thus,

Q: 1. A wooden object found in an Indian burial ground and subjected to radiocarbon dating. The decay…

A: The formula used is  t = 2.303λlogRoR where, Ro is the activity of live content, R is the activity…

Q: Francium-223 has a half-life of 21.80 min. How many nuclei are initially present in a 25.0-mg sample…

A:

Q: A radioactive isotope has a half-life of 72.0 min. A sample is prepared that has an initial activity…

A: Given Data: The half-life of a radioactive isotope is, t1/2=72.0 min The initial activity is,…

Q: what type of radioactive source would you use to treat deep-seated brain tumors-alpha , beta, or…

A: To explain : The type of radioactive source used to treat deep-seated brain tumors

Q: Answer the following questions regarding the radioactive isotope radium-226. A.Write a nuclear…

A: Given, Radium isotope Ra-226

Q: Two nuclei having the same mass number are known as isobars. (a) Calculate the difference in binding…

A:

Q: A radioactive sample has a decay constant of 0.219 3/minute. (a) What is its half-life? (b) If at…

A: The relation between the half life and the decay constant is  T = 0.693λ The equation of…

Q: 1. The isotope silver-107* undergoes gamma decay. Write the reaction equation, and determine the…

A: Introduction: Spontaneous emission of the energetic particle with high energy and high penetrating…

Q: Natural gold has only one isotope, 79197Au. If gold is bombarded with slow neutrons, e- particles…

A: (a)The reaction corresponding to the given problem is.

Q: Y When the daughter nucleus produced in a radioactive decay is itself unstable, it will eventually…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: RADIOACTIVITY. LAW OF RADIOACTIVE DECAY Activity units: 1 Ci = 3.7 × 1010 Bq 1. Nuclear decay law: N…

A: Given: Iodine-120 , I-120 has half life, T1/2 = 1.35 hours. = 4860 s Initial activity , A0 = 1 Ci

Q: (a) The daughter nucleus formed in radioactive decay is often radioactive. Let N10 represent the…

A: For the first-order reaction, the rate of radioactivity is directly proportional to the number of…

Q: You find a 37.2 g fossilized bone that has an activity of 0.024 counts per second. How old is the…

A: A living matter has 1.3×10-10 % of C-14, and the half-life of C-14 is 5730 years. Thus, determine…

Q: Two nuclei have mass numbers in the ratio 1: 8. What is the ratio of their nuclear radii?

A: The relation between the mass number and the radius is  R =Ro A13 where, Ro is constant, R is the…

Q: 22. The nucleus of iron Fe is more stable then the nucleus of bismuth 203Bi. Which of the following…

A:

Q: Complete the following equation for fission by giving the number of neutrons that are produced:…

A: given fission reaction U92236→L57142a+B3590r+x n01

Q: As shown how the number of nuclei of one particular isotope varies with time. What is the halflife…

A: Given data The initial number of nuclei is No=1000000 The nuclei after time t is N=250000 The time…