The 210^Po source used in a physics laboratory is labeled as having an activity of 1.0 microCurie 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 444 days before her lab. What fraction (in %) of the decays is she observing with her apparatus? 1G=3.7 * 10^ 10 disintegrations per second half- life of 210Po =138.376 days

Q: For the fission reaction shown below, find the energy (in MeV) that is released. in + 920 1 235 136…

A: Given : Fission Reaction : n01+U92235→S3888r+X54136e+12n01

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: X The greatest concentration of iodine in the body is in the thyroid gland, so radioactive…

A: The activity is given as  Since 1 Bq is 1 decay/second, in 1 hour (3600 seconds), the total number…

Q: radioactive

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

A:

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.00 billion years old by…

A: Given Mass (m)                      = 1.375 g Half-life of U238 t12 = 4.47×109  years Present time…

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 sample of a radioactive isotope with a decay constant of λ = 4.27 × 10-3 s-1. A sample of the…

A: we know activity R =λN where λ = decay constant  N = number of particle given  N = 2.68 × 1015…

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: A student carries out a radioactive decay experiment. She measures the activity of a source as a…

A: Dear student Activity is defined as rate of radioactive decay of nuclei. It is denoted by  R = ¥ N…

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

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Q: A student carries out a radioactive decay experiment. She measures the activity of a source as a…

A: Given: The activity of the substance is given as below. Rt=714e-0.41×t…

Q: A cobalt-60 source with activity 2.60×10-4 Ci is embedded in a tumor that has mass 0.20 kg. The…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for…

Q: 50Vhas one of the longest known radioactive half-lives. In a difficult experiment, a researcher…

A: N=Noe-λtNo is the number present at t=0 and λ is the decay constantλ=0.693t12The radioactive dating,…

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: Suppose Radon gas is trapped in a basement after renovations. The half life of radon gas Is 3.8235…

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Q: purchased by a medical supply house. If the sample has a half-life of 14 d, how long will it keep…

A: Just replace the values .... An its done

Q: A radoiactive sample has a decay constant of 0.2193/minute. a. What is it's half life? b. If at the…

A: Given, Decay constant, λ = 0.2193/minuteNumber of nuclei, No = 3.2×1015 We know that,λ =…

Q: A particular radioactive sample undergoes 2.50××10^6 decays/s. a) What is the activity of the…

A: In the given question , We have to determine  the values of given parts.

Q: An artifact classified as charcoal, found in a site at Epirus, Greece, is found to have a 14C…

A: initial radioactivity(Ro)=0.255 counts per second final radioactivity(R)=4.36 X 10-2 counts per…

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: 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: To cure thyroid cancer, a child is injected with the radioisotope Iodine-125, which emits x-ray…

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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.

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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…

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Q: 74 74 33As disintegrates to 32Ge in 68% of the cases, and to 34Se otherwise. T₁ for the 2 parent…

A: Radioactive decay: The spontaneous process in which the unstable radioactive nuclei disintegrate…

Q: The half-life of 60?? is 5.27 years. The activity of a 60?? is 3.50 × 109 Bq. What is the mass of…

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Q: an element with initial mass 1 kg started radioactivity in 2021 , in which year the element will…

A: The mass is proportional to the radiation concentration. Which means that the radiation equation can…

Q: A cobalt-60 source with activity 2.60×10-4 Ci is embedded in a tumor that has mass 0.20 kg. The…

A: Since there are five more questions and few questions have multiple sub-parts. we will solve the…

Q: A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 1.19 kg…

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

A: We know that 1Ci=3.7×1010decay/sec The given activity is =1.0×106Ci. Then the activity on decay/sec…

Q: What is the activity of a sample of C that contains 6.7x1020 nuclei? The half-life of C is 5700…

A: Solution:In 5700 years 6.5 × 10202 nuclei decay will take place, thus we have:5700 yrs =…

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.