(a) The 210 Po source used in a physics laboratory is labeled as having an activity of 1.0 μCi on the date it was prepared. A student measures the radioactivity of this source with a Geiger counter and observes 1500 counts per minute. She notices that the source was prepared 120 days before her lab. What fraction of the decays is she observing with her apparatus? (b) Identify some of the reasons that only a fraction of the α s emitted are observed by the detector.

Q: Question 4. A synthetic radioisotope is freshly prepared in a lab that has an ac- ivity of 10.0 mCi.…

A: Given data as per question t    =   5.00 h A0  =   10.0mCi

Q: The activity of a sample of a radioisotope at some time is 10.5 mCi and 0.38 h later it is 7.50 mCi.…

A:

Q: If the parent nucleus in a ß* decay is CI, what is the daughter nucleus? 17 Help chemPad XX Greek:…

A:

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

A:

Q: A person ingests an amount of a radioactive source that has a very long lifetime and activity 0.52…

A: absorbed dose rate is the amount of radiation energy absorbed by the tissue.  Therefore absorbed…

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

A:

Q: 1mg of (210) po decays to have a half-life of 138.3 days for a period of one year. What is the…

A: Given Initial amount, M=1mg=10-3g Half-life, T1/2=138.3 days=1.2×107s Time period, t=1 yr= 3.15×107s…

Q: A cobalt-60 source with activity 2.6 *10^-4 Ci is embedded in a tumor that has mass of.0.20kg. The…

A: Since there are multiple sub-parts posted, we will answer the first three sub-parts for you. If you…

Q: A beam of 168 MeV nitrogen nuclei is used for radiotherapy. If this beam delivers a 2.00 Sv dose to…

A: Given: Energy of beam (E) = 168 MeV. Of nitrogen nuclie. Relative biological effectiveness (R.B.E.)…

Q: As part of a radiotherapy course a patient is injected with a sodium phosphate solution containing…

A: Given: The mass of the phosphorus 32 is MP = 31.973908 u The mass of the product atom is MS =…

Q: a sample with a half-life of 19 days has an initial activity of 7.0 x 10^5 counts/s. what isits…

A:

Q: Suppose the activity due to the radioactive decay of the carbon-14in a tiny sample of an artifact…

A: The activity of fresh wood sample is The activity of old wood sample is The half life of carbon 14…

Q: radiation worker stands 50 cm away from a radioactive source of 25 mCi 57Co. Calculate the…

A: Given the activity of the radioactive source is equal to 25 mCi . The half- life of the source is…

Q: When Po decays, the product is Pb. The half-life of this decay process is 1.78 ms. If the initial…

A: Determine the decay constant as follows. λ=0.693t12=0.6931.78 ms=0.6931.78×10-3 s=389.3258 s-1

Q: A patient swallows a radiopharmaceutical tagged with phosphorus-32 (P), a B¯ emit- ter with a…

A: Concept: To determine the Number of Electrons emitted in 15 days we have to calculate the No. of…

Q: The activity of a sample of a radioisotope at some time is 10.7 mCi and 0.46 h later it is 7.10 mCi.…

A: Given that: The initial activity is N0=10.7 mCi The final activity is N=7.10mCi The time is t=0.46h…

Q: Question 6. At Canadian Light Source, a synthetie radioisotope is freshly prepared. The initial…

A: Given: The initial activity of synthetic radioisotopes is A0 = 10 mCi The activity changes after t =…

Q: A 5.0 x 105 Bq 241Am alpha source is used in a smoke alarm. The device is arranged so that 15% of…

A: (a) The alpha particles that detected by the device is I=15%R×q  (1) Here, q is the Charge of an…

Q: Gamma rays may be used to kill pathogens in ground beef. One irradiation facility uses a 60Co source…

A: The total amount of energy of gamma rays per beta decay of 60Co can be given as, Here, ε represents…

Q: The β-particles emitted in the decay of 3H (tritium) interact with matter to create light in a…

A: Relation between half -life and activity can be express as -  NNo=(12)tt12 .....(1) Given and known…

Q: A certain amount of a sample of 96X has an activity of 0.1084 μCi. In 24.2 days, the activity of the…

A: Given, A certain amount of a sample of 96X has an activity of 0.1084 μCi. In 24.2 days, the activity…

Q: A radiation detector records 8700 counts in 1.00 min. Assuming that the detector records all decays,…

A: a) The required activity in Becquerel unit,

Q: 40.12 A sample of material contains 2.00 x 1015 atoms. The sample initially consists entirely of a…

A: Let N denote the number of atoms of the radioactive substance A. Let t1/2 denote the half-life time…

Q: The activity of a sample of a radioisotope at some time is 10.5 mCi and 0.46 h later it is 7.00 mCi.…

A: Initial activity of isotope is Ro = 10.5 mCi Activity after some time is R = 7.00 mCi Time elapsed…

Q: Find the activity A of a sample containing 4E-6 g of 2760Co (T1/2 = 5.27 years). (Use 59.93 u as the…

A: Given: Weight, W =4.0×10-6 g Mass number, A = 59.93 u Avogadro number, NA = 6.022×1023 atoms/mol…

Q: A 5000-Ci ⁶⁰Co source used for cancer therapy is considered too weak to be useful when its activity…

A: Basic Details The ratio of the activity is an exponential function of decay activity and the time…

Q: 7 3Li is 7.016004 u, the atomic mass of 4 2He is 4.002603 u, the atomic mass of a neutron is…

A: Given: Atomic mass of 73Li=7.016004 u atomic mass of 42He=4.002603 u atomic mass of neutron…

Q: Radioactive isotopes are often introduced into the body through the bloodstream. Their spread…

A: Given : Half life of 131I (t1/2) = 8.0 d Initial activity (A0) = 325 Bq

Q: A synthetic radioisotope is freshly prepared in a lab that has an activity of 10.0 mCi. If the…

A:

Q: What time interval elapses while 51.0% of the radioactivity of a sample of 7233As disappears, as…

A: As per given data, 51% of the radioactivity of a sample disappears.

Q: Plutonium has a decay constant of 2.75 x 10-16 s-1. Suppose we had a 1.00 g sample what will be its…

A: Radioactive decay is the process by which unstable nuclei spontaneously lose energy to become…

Q: A radioactive sample is monitored with a radiation detector to produce 7640 counts per minute.…

A: Initial count is Final count is Time is Find:(a) Decay constant of the sample.(b) Half-life time.

Q: A cobalt-60 source with activity 2.6010-4 Ci is embedded in a tumor that has mas 0.20 kg. The source…

A: Hai, since there are multiple sub parts posted, we will answer the first three sub parts. i.The…

Q: Q41. A radioactive source has a half-life of 20 days. Calculate the activity of the source after 70…

A: Radioactive elements emit radiation of different types. With time the amount of the radioactive…

Q: A small region of a cancer patient’s brain is exposed for 24.0 min to 475 Bq of radioactivity from…

A: Given: To find the dose in rads with the given values as,

Q: Large amounts of bSZn are produced in copper exposed to accelerator beams. A physicist was machining…

A: Given, The physicist ingest 83.3μCi of Z65n  average gamma energy emits by the source is, Eavg =…

Q: Strontium-90 from the testing of nuclear bombs can still be found in the atmosphere. Each decay of…

A: The amount of nuclei initially absorbed is

Q: An average adult body contains about 0.10 pCi of K, which comes from food. (a) How many decays occur…

A:

Q: A PuBe source has a neutron activity of 1.6 x 105 Bq. The neutrons are produced by the 9Be(∝ , n)12C…

A: Given, The neutron activity of PuBe is A=1.6×105 Bq product by the neutron through is, B9eα,nC12…

Q: (a) The 210 Po source used in a physics laboratory is labeled as having an activity of 1.0 µCi on…

A: Given,

Nuclear Reactions

Nuclear reactions are processes in which the fundamental characteristics of a nucleus changes. They change into a completely different nucleus. These processes occur naturally in an unstable nucleus. Bombarding an energetic particle can induce nuclear reactions.  In this article, both the naturally occurring nuclear reactions are termed as radioactive decay and the induced nuclear reactions are further categorized as nuclear fission and nuclear fusion.