You have a sample 100.0 g sample of lodine-135. a) Determine the half-life of a radionuclide if after 37 days 1/32 of the sample is undècayed (radioactive). b) How many grams of the sample remain radioactive if 7/8 of the sample have decayed? c) How many grams of the sample does the 7/8 decay equal? d) How much time has elapsed if 25g of the original sample remain radioactive?

Q: 4. Indicate with a plus sign (+) any of these processes that require energy, and a negative sign (-)…

A: Some process, energy is required. For some process, energy is released depending upon the particular…

Q: Iodine that answers the body is stored in the thyroid gland from which is released to control growth…

A: Radioactive decay follows of first order Kinetics.

Q: An animal skeleton has a carbon-14 decay rate of 11.1 disintegrations per minute per gram of carbon.…

A: given: carbon-14 has a half-life = 5730 yrs  carbon-14 decay rate = 11.1 disintegrations carbon-14…

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A: The solution is as follows :

Q: Heavy nuclides with too few neutrons to be in the band of stability are most likely to decay by what…

A: The nuclear reactions are a type of chemical processes which lead to the formation of some new…

Q: A sample of cobalt-60 was labelled as having an activity of 3.25mCi, but upon inspection, it…

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Q: Krypton-79 has a half-life of 34.50 h. After 138.0 h, 54.25 kg of this radioistope is left. How much…

A: Given, the half-life of Krypton-79 is 34.50 hthe amount of radioisotop left after 138.0 h is 54.25…

Q: if the passing of five half -life leaves 50.0g of a of radioisotope sample, how much was present in…

A: Mass of sample after 5 half life = 50 g Initial amount = ?

Q: Determine the half-life of a radionuclide if after 18 days the fraction of undecayed nuclides…

A: Half-life (t1/2) represents the amount of time at which the concentration of the radioactive nuclide…

Q: ¹¹C is often used in PET (positron emission tomography) diagnostic equipment. What nuclide is…

A: Positron Emission Tomography is a nuclear medicine imaging technique that is widely used in early…

Q: A hospital patient receives a dose of Technicium-99m with a mass of 0.050mg. Given that the…

A:

Q: nuclear binding energy for a mole of beryllium (Be-9

A:

Q: If a rock contained 12.0 g of ⁴⁰K when the earth was formed 4.54 billion years ago and the half-life…

A: Given information is as follows; Initial mass of ⁴⁰K in the rock A0 = 12.0 g Final mass of ⁴⁰K in…

Q: 25 grams of rock there are 3.43 grams of radioisotopes and 0.482 grams of nuclides derived from the…

A: Given: In 25 grams of rock, there are: 3.43 grams of radioisotopes. 0.482 grams of nuclides derived…

Q: If 1.0000 mg of nuclide undergoes alpha decay consistent with curve (b), how many milligrams remain…

A: The point where time = 6 vertical line and curve b meets, will be the point for quantity of isotope…

Q: A radioactive isotope has a half-life of 12.0 seconds. How much of a 100 gram sample is left after…

A: Given  Half life of radioactive isotope ( t1/2 )  = 12 second  Initial Mass of sample   ( A )0 = 100…

Q: Suppose you had a detection device that could count every decay event from a radioactive sample of…

A:

Q: Predict which of the following nuclides are likely to be radioactive (Briefly justify your choice)…

A: Some of the nuclides is radioactive because they have unstable atomic nuclei which is due the…

Q: What is the balanced nuclear reaction for the following process? Iodine-131, used to treat…

A: It is given that iodine-131 is undergoing beta decay.

Q: You have a sample 100.0 g sample of lodine-135. a) Determine the half-life of a radionuclide if…

A:

Q: The half-life of Polonium-218 is 3.00 minutes.  How many half-lives pass after 18.0 minutes ?  The…

A: Concept - Radioactive decays are first order reactions. So we use the formula, Nt = No(1/2)n, where…

Q: Which of the following radioisotopes are most likely to be used in nuclear medicine? (write the…

A: Given information:For 40K half-life is 1.3 × 109 years.For 42K half-life is 12 hours.

Q: mammoth skeleton has a carbon-14 decay rate of 0.0077 disintegration per second per gram of carbon.…

A: We need to find out how long ago the mammoth lived.  We are given the carbon-14 decay rate i.e.…

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A:

Q: A wooden artifact is subjected to radiocarbon dating. The activity associated with its 14C content…

A: Since the decay reactions are first order reactions. Hence the relationship between the activity and…

Q: Normal No Spacing Head 三三。 Paragraph Styles 22. A normal adult jawbone contains 200 mg of Carbon-14…

A:

Q: Which radioactive decay is most probable? O !c → '}N + B O lịc → ZBe + O 4c → '8c + B• O %c → '}B +…

A: There are different type of decays in nuclear Chemistry to give different type of changes in nuclear…

Q: A normal adult jawbone contains 200 mg of Carbon-14 in a living person. If scientists found a…

A:

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.