Assuming a radioactive nuclide with an initial activity of 2.4 x 10^3 pCi, how many half lives would be needed to reduce the activity down to 5.5 pCi?

Q: Calculate the binding energy (in Joules) of a nuclide 112X48 from the following information: mass of…

A: B E= mass defect ×c2 where c is speed of light . Mass defect,∆m  = Zmp+Nmn- mA  where m is mass and…

Q: Consider a certain type of nucleus that has a half-life of 32 min. Calculate the time required for…

A: The radioactive decay law can be used to determine the time at which 66% nuclei are remining.

Q: nuclide 22086X decays to a new nuclide Y by emission of two alpha particles and two beta particles.…

A: In alpha decay atomic mass decreased by 4 while atomic number decreased by 2 ,it is also known as…

Q: Predict a likely mode of decay for unstable nuclide. Ru-90

A: When an isotope is not stable, it may undergo radioactive decay to form more stable isotopes. There…

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

A: Co-60 is used medically for radiation therapy as implants and as an external source of radiation…

Q: Cesium-131, 13 Cs, is a radioactive isotope used to treat prostate cancer. The half-life of 131 Cs…

A: Rate constant ( k ) = 0.6931 / half life  Rate constant (k) = 0.6931 / 9.70days  Rate constant (k) =…

Q: What is the balanced nuclear equation for the formation of Ac-228 by Beta emission? 228 Ra 88 228 Fr…

A: The balanced nuclear equation for the formation of Ac-228 by beta emission has to be written.

Q: A sample of wood from an Egyptian mummy case taken from an archaeological site is subjected to…

A:

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: Predict a likely mode of decay for unstable nuclide. P-27

A: The decomposition of parent nucleus to the stable daughter nucleus takes place by nuclear decay…

Q: How do the modes of decay differ for a neutron-rich nuclide and a proton-rich nuclide?

A: The nuclides are species of atom having particular number of protons and neutrons, which contain a…

Q: What mass of Carbon-14 must be in a sample to have an activity of 2.00 mCi?

A: Solution - According to the question - Given - 2.00mCi = 2.00 * 10-3 Ci = 2.00 * 10-3 * 3.7 * 1010…

Q: The uranium decay series from U-238 to stable lead (Pb-206) is: 238U → 234TH -→ 34P. 91 92 210Pb →…

A: α - particle emitters are- U92238 → T90234h + H24e U92234 → T90230h + H24e T90230h → R88226a + H24e…

Q: If a radioactive sample had an activity of 5.0 mCi, how many disintegrations per second does this…

A: Given data contains, Activity of the sample is 5.0 mCi.

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

A:

Q: Plutonium (248Pu) has the following decay series:   a decay followed by another a decay, then a b…

A:

Q: Predict the type of radioactive decay expected for the following unstable nuclides. 17 (а) F 9 alpha…

A:

Q: What particle is required to balance the nuclear equation 235U + In -→ ? + 92 Sr + 4 on xenon-140…

A: Process where two or more different nuclei collide to generate atoms or subatomic particles is…

Q: A radioactive isotope has a half-life of 24.5 minutes. how long will it take for the radiation from…

A:

Q: Write the balanced nuclear equation for the beta decay of each isotope. 25 {Na : Mg + 0 25 Incorrect…

A: β-decay is the radioactive decay in which the radioactive nucleus is disintegrated to form the…

Q: 2. Some mammoth bones found in Arizona were found by carbon-14 dating to be 1.13 x 10' y old. What…

A: t1/2 = 5730 y t = 1.13 X 104 y N0 = 15.3 dis/min/g N =?

Q: Given specimens uranium-232 (t1/2 = 68.9 y) and uranium-233 (t1/2 = 159,200 y) of equal mass, which…

A: Among neon-24 and bismuth-211 of equal mass, which one has greater activity. uranium-232 (t1/2 =…

Q: (d) 237Np is a parent nuclide of a decay series starting with an a emission, followed by B emission…

A: In nuclear Chemistry, we can change atomic number and mass number, by help of particular decay or…

Q: A worker in a laboratory unknowingly became exposed to a sample of radio-labeled sodium iodide made…

A:

Q: Calculate the mass in grams that corresponds to an activity of 1 mCi of the following radionuclides:…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Calculate the mass defect and nuclear binding energy pernucleon of each nuclide.a. Li-7(atomic mass…

A:

Q: A nuclide 22086X decays to a new nuclide Y by emission of two alpha particles and two beta…

A:

Q: The nuclide 192Pt78decays to  1880s76 by alpha emission. The mass of  192Pt78 is 191.96146 u  and…

A: Alpha decay is the  type of radioactive  decay. Which atomic nucleus is emit alpha particles and…

Q: 255. Select the nuclide that completes the following nuclear reaction. 13Al → °B + ? A) Mg 25 Al E)…

A: The given equation represents an example of decay in which emission of positron takes place. In…

Q: How is the nuclide 23892U altered by (i.) the emission of one α particle, (ii.) the emission of one…

A:

Q: Phosphorus-32, 32P, is a radioactive isotope used in the treatment of leukemia. The half-life of $2P…

A: Radioactive decay of element is first order kinetics , in which half life of molecule is independent…

Q: 214 the half-life of 3Bi is 19.7 minutes, calculate the mass of radionuclide Bi-214 if the activity…

A: Here we have to determine mass of Bi-214 nuclide and specific activity i

Q: 925r38? Which is the balanced nuclear equation for beta decay, 2Sr38? 92Sr38 --> 93Y39 + e1 O 92Sr38…

A: The beta particle is °e-1  The beta decay results in increase in atomic number by 1 whereas the…

Q: For the following nuclides: Polonium-210 Nitrogen-13 Palladium-103 Lead-214 Determine the most…

A: 1) The most likely mode of decay in each of the following is: a) Polonium-210 - alpha decay b)…

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

A: Given  initial activity of Co-60 = 3.25 mCi final activity of Co-60 = 1.50 x 107 Bq  half life time…

Q: Explain what is meant by the half-life of a radioactive nuclide. Living wood has an activity of 16…

A: A radioactive nuclide is an atom that has excess nuclear energy, making the atom unstable.…

Q: Write the nuclear equation for the most likely mode of decay foreach unstable nuclide.a. Kr-74 b.…

A: When n/p ratio is calculated for given elements  1st  7436Kr           n/p = 1.0555 ≈ 1.06∵ n/p…

Q: A radioactive isotope has a half-life of 46.3 minutes. how long will it take for the radiation from…

A:

Q: Predict a likely mode of decay for unstable nuclide. Ba-123

A: The mode of decay that is likely to be undergone by the nuclide depends on the neutrons to proton…

Q: 2. On the axis provided fill out the region occupied by all known nuclides and use it to explain why…

A:

Q: 5. Classify each nuclide as stable or unstable a. 232Th b. 20Ca 265 c. 104Rf d. Ag c. 1301 40 d.…

A: The stability of nuclide is determined by neutron to proton ratio. For atoms upto atomic number 20…

Q: lodine-131, t2 = 8.0 days, is used in diagnosis and treatment of thyroid gland diseases. If a…

A:

Q: Which of these nuclides is likely to decay by alpha emission?      a  244Pu             b.  4He…

A: Alpha decay occur mostly in  elements that have high mass number or atomic number. Out of the given…

Q: If the half-life of a 2.0 gram sample of a radionuclide is 15 hours, then the half-life of a 1.0…

A: Given: Initial mass of sample = 2.0 g. Half-life of sample = 15 hours. And final mass of sample =…

Q: 3. A sample of wood from an Egyptian mummy case taken from an archaeological site is subjected to…

A: Recall the following expression to find the age of wood which was used to make the case of Egyptian…

Q: If the nuclide has a half-life of 12 hours, how much of the nuclide remains in the patient after 6.0…

A: Given :  Half life of nuclide  = 12 hours  Total time = 6 days   Or total time = 6 × 24 hours = 144…

Q: A person is exposed for three days to identical amounts of two different nuclides that emit…

A: Given information:A person is exposed for three days to identical amounts of two different nuclides…

Q: Complete the following statement: Resulting from the electron capture of (A)-168 is a daughter…

A: Given,  Resulting from the electron capture of (A)-168 is a daughter nuclide with (B) neutrons and…

Q: At 8:00 a.m., a patient receives a 58-mg dose of I-131 to obtain an image of her thyroid. If the…

A: At 8:00 a.m., a patient receives a 58-mg dose of I-131 to obtain an image of her thyroid. If the…

Q: Radiation workers enter an area for 20 minutes in which they are subjected to 50 keV neutron…

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.