Given specimens uranium-232 (t1/2 = 68.9 y) and uranium-233 (t1/2 = 159,200 y) of equal mass, which one would have greater activity and why?

Q: About 0.0117% of the 600 mg of potassium in a typi- cal banana is radioactive potassium-40. If 1.00…

A: Given: 1) Mass of potassium in a typical banana is radioactive 0.0117% of the 600 mg of…

Q: D. The half-life of 210Pb is 21 years. How old is a painting in which the activity of 210Pb activity…

A: Calculation

Q: How the specific activity of an isotope in an object is used to determine the object’s age

A: How the specific activity of an isotope in an object is used to determine the object’s age.

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: A sample of cobalt-60 (t1/2 = 5.27 yr), a powerful g emitter used to treat cancer, was purchased by…

A: All radioactive decay processes follow first order reactions. Calculating rate constant for first…

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: In each of the following radioactive decay processes, supply the missing particle. 60Co -> 60Ni + ?…

A:

Q: Q6: A fission reactor accident evaporates 5 x 10 Ci of 90Sr (T12= 27.7 yr) into the air. The 90Sr…

A: Given, S90r is evaporated = 5×106 Ci T12= 27.7 yr Area = 104 km2 Required safe level = 2 μCim2

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

A:

Q: In one of the neutron-induced fission reactions of U-235 (atomicmass = 235.043922 amu), the products…

A: Given: Temperature=25°C= 298K Molar mass of U-235= 235.043922 amu Pressure= 1 atm Mass of U-235=…

Q: Which nuclide of each pair would you expect to have the longerhalf-life?a. Cs-113 or Cs-125 b. Fe-62…

A: The atoms which have same atomic number but different number of mass number are called isotopes. The…

Q: A radiation worker is subject to a dose of 250 mrad/h of maximum QF neutrons for one 40 h work week.…

A: Radioactivity is a continuous emission of charged particle from an atomic nucleus and it is due to…

Q: Fusion reactions are often called amounts of thermal energy required for the reaction to occur. a.…

A: 3. Thermonuclear reaction, fusion of two light atomic nuclei into a single heavier nucleus by a…

Q: A wooden artifact is burned and found to contain 21 g of carbon. The C activity of the sample is 242…

A:

Q: 8.) A sample of bone has a specific activity of 5.22 disintegrations per minute per gram of carbon…

A: The rate constant can be calculated as follows-

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: A sample of iodine-131 (t1/2 = 8.0 days) has an activity of 200. mCi. What activity is observed…

A: The rate of the reaction is referred to the change in the activity in the distinct interval of time.…

Q: Cobalt-60 (t1/2 = 5.26 y) is used in cancer therapy since the γ rays it emits can be focused in…

A: The given mass of Co = 5gm Molar mass is given as 60 g. The number of atoms is calculated as…

Q: Decay Schemes Cu (12.8 h) G 38% E 0.5% 0.573 MeV 1.34 Stable A F 43% QEc = 1.678 MeV* D 19% 0.0…

A:

Q: 11. Which of the following poses a greater health hazard: a radioactive isotope with a short…

A: The given information says that both isotope are assumed to be in equal molar amounts and emits same…

Q: A vial containing radioactive selenium‑75 has an activity of 3.0 mCi/mL . If 2.7 mCi are required…

A: Given: Selenium-75 activity is 3.0 mCi/mL.

Q: (a) What mass of Na₂38SO4 has an activity of 11.7 mCi? Sulfur-38 has an atomic mass of 38.0 and a…

A:

Q: What is the binding energy in kJ/mol nucleons for copper-63? kJ/mol nucleons 29 H+ 34,n Cu The…

A:

Q: What is the binding energy in kJ/mol nucleons for copper-65? kJ/mol nucleons 29 H+ 36,n Cu The…

A: Given nuclear reaction: 29H + 36 11n → 01Cu2965 The required masses (g/mol): H11 = 1.00783; n01 =…

Q: 369.1 mg of 239Pu decays into 235U via alpha decay. If 239Pu weighs 239.0006 g/mol, 235U weighs…

A:

Q: The a-decay of 238U (t,/2 = 4.47x10°y) leads to 234TH (t/2 = 24.1d). A sample of uranium ore should…

A: Given, α decay of U238 to T234h. The isotopic abundance of U238 (natural) = 99.3 %

Q: Half-Life   163 days     Current Activity   0.10 μCi     Number of Half-Lives between now and 326…

A:

Q: Q6: A fission reactor accident evaporates 5 x 10° Ci of 90Sr (T2=27.7 yr) into the air. The 9Sr…

A:

Q: What is the activity (in Bq) of a sample of Cs-137 if 81.6 years ago it was recorded to have an…

A: Time = t = 81.6 years Initial activity = A0 = 7536.7 Bq  Final activity = A = ? Bq  Every…

Q: Draw the decay diagram for the decay of 32 Si to 325. If the total energy of decay for the beta…

A:

Q: 3. If a radioactive sample had an activity of 5.0 mCi, how many disintegrations per second this…

A: We know that 1 Curie or 1 Ci= 3.7×1010Bq( bacquerel). And 5 mCi = 5×10-3Ci = 5×10-3×3.7×1010Bq.  =…

Q: A sample of wood from a Thracian chariot found in an excavation in Bulgaria has a 14^ C activity of…

A: A numerical problem based on age of element, which is to be accomplished.

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

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: Calculate the nuclear binding energy in mega electronvolts (MeV) per nucleon for 244 Pu. 244Pu…

A: Nuclear binding energy: Nuclear binding energy is the amount of energy used to break down a nucleus…

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

A:

Q: Radium-226 (atomic mass = 226.025402 amu) decays to radon-224 (a radioactive gas) with a half-life…

A:

Q: A chemist wishing to do an experiment requiring Ca (half-life = 4.5 days) needs 4.0 µg of the…

A: A chemist wishing to do an experiment requiring 47Ca2+ (half-life = 4.5 days) needs 4.0 µg of the…

Q: The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is…

A: A = Nλ A = activity or decay rate λ = Disintegration constant n = No. of atoms disintegrate  Molar…

Q: The question is: The activity of Arsenic-76 after 157.8 hrs is 120.2 micro milicuries. What was the…

A: The activity depends on the no of atom present in the sample .

Q: Which of the following poses a greater health hazard: a radioactive isotope with a short half-life…

A: Radioactive isotopes of an element can be defined as atoms that contain an unstable nucleus and…

Q: , or A Germanium-68 (Ge68)/Gallium-68 (Ga68) radionuclide generator is milked, or eluted, on…

A: Option b is correct answer. B.  That same day , Thursday, at 12 noon.

Q: 9. The noble gas radon has been the focus of much attention because it may be found in homes.…

A: Given: Radon-222 emits alpha particles. Half life = 3.82 days

Q: 40K (t1/2 = 1.3 × 109yr) and 14C (t1/2 = 5.7 × 103 yr) are two radioactive isotopes found in…

A: A nuclear reaction involves the conversion of nucleus with the emission of certain nuclei or small…

Q: A wooden artifact is burned and found to contain 21 g of carbon. The "C activity of the sample is…

A:

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

A: 1) calculate what decimal fraction of C-14 will be remaining: 11 / 15.2 = 0.72 2) calculate…

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.