Radioactive Decay Curve for Arsenic-79 100 75 25 Time (min) Based on the above graph, what is the time required for the sample of arsenic-79 to experience its 2nd and 3rd half-lives respectively? Amount of Arsenic-79 (%)

Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 5.30 x 1011 Bq when…

A: Given data:     Decay rate, dNdt=5.30×1011Bq    Nuclei, N = 2.50 ×1015

Q: a) 95 μm  b) 90 μm c) 85 μm  d) 80 μm

A: The intensity of the neutron beam is

Q: The number of radioactive nuclei present at the start of an experiment is 3.52 x 1015. The number…

A:

Q: What is (a) the atomic number and (b) the atomic mass number of the daughter nucleus produced by the…

A:

Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 4.70 x 1011 Bq when…

A: Given : Decay rate = 4.70 × 1011 Bq             Nuclei = 1.70 × 1015

Q: 131 I is given to a patient for use in a diagnostic procedure on her thyroid. Part A What percentage…

A: We know that, half life of iodine is approximately 8 days. So, T1/2 = 8 days. Now, T1/2 = 0.693λ or,…

Q: The graph above represents the nuclear decay of a radioactive element, measured using a…

A: Graph is given as,

Q: Tritium (half-life = 12.3 yr) is used to verify the age of expensive brandies. If an old brandy…

A: Given: The half-life of tritium = 12.3 years Amount of tritium present in the old brand =1256

Q: a) Define the activity of a radioactive source b) The activity of a radioactive source is…

A:

Q: Gallium-67 is a radioactive isotope used in treatment of lymphomas. If 63.5% of a 6'Ga sample…

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: At a distance of 100cm, the exposure from a radioactive substance is measured at 450mR. What will…

A: Radioactive materials give off a form of energy that travels in waves or particles. This energy is…

Q: A Geiger counter registerss a count rate of 6,800 counts per minute from a sample of a radioisotope.…

A:

Q: A device used in radiation therapy for cancer contains 0.44 g of cobalt-60 (59.933 819 u). The…

A:

Q: a) The activity of a radioactive source is given by dN AN dt where N is the number of nuclei present…

A: A) The activity of a radioactive source is given by : -dNdt = λN initial number of nuclei = No at t…

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

A:

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: A Geiger counter is placed at a distance 2m from a Cobalt 60 source emitting γ rays. The measured…

A:

Q: Based on data acquired during a radioactive decay lab using an unusual assortment of geometrically…

A: The trendline equation for radioactive decay can be expressed as: N(t)=No×e(-λt) where: N(t) = the…

Q: d) Below is a decay curve for iodine-131. This is used in the treatment of thyroid cancer.…

A:

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: Question 8 a) Define the half-life of a radioactive material. b) State the relationship between…

A: Given that: In part a, the concept of half-life in radioactive materials is defined. In part b, the…

Q: Substance X has a half-life of 10 years, if you start with 1000 grams, how much will be left after…

A: Given data:  Half life (t1/2)= 10 years Initial quantity (N0) = 1000 grams  Time (t)  = 100 years…

Q: The radioactive glucose used in PET scans has a half-life of approximately 2 hours. How much of the…

A: Half life (t) of radioactive glucose= 2 hours Time period (T) = 8 hours Let the original amount of…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.