Q3:- The half-life of 31 is 8.04 days. (a) Calculate the decay constant for this isotope. (b) Find the number of 3 nuclei necessary to produce a sample with an activity of 0.5 uCi.

Q: Cesium-137 is radioactive and has a half life of 30. years. Calculate the activity of a 1.4 mg…

A: Given value--- half life time = 30 year . mass = 1.4 mg. We have to find---  Calculate the…

Q: The radioactive decay law is given by where N(t) = Noet 2= In(2) 11/2

A: We have given radioactive decay law. We want to linearlize the given equation.

Q: a- The half-life of the radioactive nucleus Ra is about 1.6 x10 yr and the initial activity is…

A: Given t0.5 = 1.6 ×103 yr           No=11.3uCi  and we need to find difference in decay rate and…

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

A: (a) Initial radioactive nuclei

Q: (a) Define the term decay constant of a radioactive substance. 92 (b) The half-life of 238U…

A: We are aware that U92238 a degradation has a half life of 4.5×109 years.We must determine the…

Q: P5 A reindeer owner finds a 5-year-old reindeer roast in his freezer. When the steak was placed in…

A:

Q: 5. How many nuclei of 238 U remain in a rock if the activity registers 270 decays per second? (Note…

A:

Q: A 0.01 cm thick gold plate is bombarded for 10 minutes with a thermal neutron beam with a flux of…

A:

Q: B- Measurements on a radioactive sample show that its activity decreases by a factor of five during…

A:

Q: Use the values from PRACTICE IT to help you work this exercise. (a) Find the number of remaining…

A:

Q: A nucleus of ²³⁶U undergoes fission and splits into two fragments ¹⁴⁰Xe and ⁹⁶Sr. Assume that all…

A: We know: The sphere must be touching when the potential energy is the maximum. The number of protons…

Q: The following nuclei have induced fission critical energies as listed below. From these data,…

A: We need to determine if the target Nucleus is fissile or fissionable.

Q: A freshly prepared sample of a certain radioactive isotope has an activity of 12 mCi, Alter 9.6…

A: Given data, Activity of the fresh sample = 12 mCi Activity of the sample after 9.6 minutes = 6 mCi

Q: The half-life of 131t is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay…

A:

Q: 9. The radioactive isotope (82Sr) has a half-life of 25.4 days. A sample containing this isotope has…

A: The radioactive isotope is Half-life time of radioactive element is The initial activity is…

Q: 3. A sample of a radioactive isotope is found to have an activity of 115.0 Bq immediately after it…

A:

Q: dN, =-k,N¡ ve dt dN, = kN; – k,N, dt

A: The radioactive decay reactions for particle N1 is given as dN1dt=-k1N1 vedN1N1=-k1ve dtln N1=-k1ve…

Q: When fewer than 3.75 × 106 americium nuclei remain, the ionization smoke detector will not operate…

A: Given that:The half-life of Americium-241The threshold below which the ionization smoke detector…

Q: Q2: Fill in Blank (a) In B-decay, the total number of N and P in the nucleus which is equal to --.…

A: a) In beta decay, the total number of proton and neutron will remain constant, that is the mass…

Q: Pretest: Unit 5 Question 11 of 25 Which of the following nuclei is most stable based on its binding…

A:

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

A:

Q: The iodine isotope ¹331 is used in hospitals for diagnosis of thyroid function. If 570 µg are…

A: Since you posted a question of multiple subparts type questions, we will solve only the first three…

Q: DATING THE ICEMAN OTZI. On 19 September 1991, the Iceman dubbe "Ötzi" was discovered in the Italian…

A: The activity of iceman otzi was found 0.121 decays/second per gram of carbon. Using this…

Q: 4⁰K is an unusual isotope, in that it decays by negative beta emission, positive beta emission, and…

A: Q value for a reaction is the amount of energy absorbed or released during the nuclear reaction. The…

Q: Given the mass of a radioactive material, phosphorus 32P is 0.60 g and its half-life, T1/2 is 14.3…

A:

Q: The nucleus16 B(Z=5)has not been detected in nuclear reaction studies. Explain why. (Please type…

A: Nucleus of 16 B ( Z = 5 )

Q: You measure the decay rate of a radioactive sample to be 4.225 x 101 Bq. After 139 seconds, the…

A:

Q: α decay of 210Po , the isotope of polonium in the decay series of 238U that was discovered by the…

A: Nuclear decay is the process by which an unstable nucleus will decay into a stable one by emitting…

Q: Q1) As of early 1981, approximately 1500 000 litres (1500 m³) of radioactive water were located in…

A: We are given the activity of the sample in water which was Cesium. We are also given half life of…

Q: 10. The radioactive isotope (82Sr) has a half-life of 25.4 days. A sample containing this isotope…

A: Given, The half-life of radioactive elements is 25.4 days The initial activity, R=4.50×108 Bq

Q: B- Measurements on a radioactive sample show that its activity decreases by a factor of five during…

A: Solution-Given thatRatio of final and initial activity AA∘=15Time interval (t)=2 hourNow half life…

Q: 4. An ancient club is found that contains 150 g of pure carbon and has an activity of 4 decays per…

A:

Q: A nuclei has a half-life of 2.80 days. If 122 mCi were prepared but had a delay of 8.0 days. How…

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: Q3:- The half-life of 131 is 8.04 days. (a) Calculate the decay constant for this isotope. (b) Find…

A: Given data, Half life = 8.04 days Activity of the sample = 0.5 micro Curie

Q: Problem 8:  In a living organism, a fixed fraction 1.30 × 10-12 of 12C is the radioactive isotope…

A: Given data: fixed fraction =1.30 × 10-12 of 12C Need to determine the numeric value is expected.

Q: Patients with Graves disease have an overactive thyroid gland, and are commonly treated with…

A: Given, Half-life, t1/2=8days Activity, A=9.9mCi The decay constant is given by,…

Q: The half-life for the a decay of uranium 2U is 4.47 x 10° yr. Determine the age (in years) of a rock…

A:

Q: The activity of a sample of a radioisotope at some time is 10.7 mCi and 0.36 h later it is 7.80 mCi.…

A: (a) using the nuclear decay equation: N =NOe-tt12--------------(1)given thatN = 7.80mCiNo =10.7mCit…

Q: Uless stable than carbon-12 Why is the uranium-238 nucleus nucleus (12C? Give an explanation by…

A: According to Coulomb’s law, the two like charges (protons) repel each other. Inside a nucleus,…

Q: Barium-133 is a radioactive element used in certain medical procedures.  A sample of pure Barium133…

A:

Q: d) A radioactive source has an activity of 3.6x107 Bq due to the decay of a radioisotope with a…

A: