C has a half life of 5,730 years. How many 6C atoms would you need in order to measure an average of 10 decays per second? Round your answer to 2 decimal places.

Q: A molybdenum isotope (Z=42 Z=42) undergoes beta negative decay (β−). Based upon conservation of…

A:

Q: Atts, you have a pure sample of an unknown substance. At t= 293 s, 36.8% of the substance remains.…

A: Radioactive substance remaining at t=293s, N=36.8100×N0=0.368N0

Q: From the known atomic masses (nndc website), compute the Q-value of the decay 230Th → 226Ra + ?…

A: T90230h → R88226a + α The mass of the parent nuclei Thorium is mTh = 230.0331338 u The mass of…

Q: Q41. A radioactive source has a half-life of 20 days. Calculate the activity of the source after 70…

A:

Q: The number of radioactive atoms in a sample decay as the emission of radiation proceeds and this may…

A: According to the data given Half life is 3hr And relationship given is . N(t) = N0 e(-t/£)

Q: An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 392 g…

A: GivenThe mass of 12C carbon in the Jewelery is 392 gThe current decay rate of 14C is 26 decay/sThe…

Q: Determine the binding energy and mass defect of Boron nuclide (A = 11, Z = 5). Note: mass of proton:…

A: Given value--- mass of proton: 1.6726219 * 10 ^ - 27 kg: mass of neutron: 1.674927471 * 10 ^ - 27…

Q: 234U has an time constant 3.11 x10° years. How long will it take to reduce a sample of 6,571 234 U…

A: Given: Time constant, τ=3.11×105 years Number of atoms initially, No=6571  atom Number of atoms…

Q: A pure sample of 226 Ra contains 2.0 x 10^14 atoms of the isotope. If the half life of. 226 Ra = 1.6…

A: Given that, No. of atoms of a pure sample of 226 Ra is 2.0 x 1014 atoms. The half-life of the sample…

Q: The half life of 238 U against a-decay is 92 238 U having 92 1.5 x 10 s. What is the activity of a…

A:

Q: An 10 g sample of a radioactive element takes 5432.6 years to reduce into 1 g. Calculate the…

A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…

Q: You are assisting in an anthropology lab over the summer by carrying out 14C dating. A graduate…

A: Let A denote the activity of the sample, t denote the time taken n decay. The time taken for n…

Q: Example 9: Tritium (³H) has a half-life of 12.3 years and releases 0.018 6 MeV energy per decay.…

A: Given Tritium H3 half-life t12 = 12.3 years Energy ε                          = 0.0186 MeV Mass of…

Q: How many stable isobars do you expect with atomic mass number 97? Number If the nucleus 97 42 with…

A: As you didn't specify the particular questions to be answered,  as per the guidelines we are solving…

Q: (A) Binding energy of 22286Ra nucleus =   (B) Binding energy per nucleon of 22286Ra nucleus

A:

Q: Consider the α decay 92U143→ 90Th141+2He2.     Part (a) What energy, in megaelectron volts, is…

A: Consider the α decay 92U143→ 90Th141+2He2.

Q: At the end of its life, a star with a mass of two times the Sun’s mass is expected to collapse,…

A: The expression for the radius is,

Q: The uranium decay series from U-238 to stable lead (Pb-206) is: 222 86 U - Th → Pa → U → 0Th → Ra →…

A: An element is said to be an alpha-particle emitter when it decays by emitting a Helium nucleus.…

Q: Consider the nuclei  11750Sn. Determine its mass defect in kilograms if its atomic mass is 116.95…

A:

Q: The formation of helium nucleus, from the fusion process of two deuterium nudei is shown as below:…

A: For the following problem, we have to select the best alternative for true statement.

Q: A purified sample of Mo-99 contains 370 million Bq. a. What mass does this represent if the…

A: It's a moderate-level question of radioactivity. It's a little bit confusing because 1st question…

Q: onsider the decay scheme RaE →→ RaF ✨ Ra- ample of RaE weighs 5 × 10-¹0 g at time t = 0. alculate…

A:

Q: An ancient club is found that contains 140 g of pure carbon and has an activity of 4 decays per…

A: Given Mass of carbon in ancient club = 140 gm Carbon activity = 4 decays /sec Living trees ratio of…

Q: Consider two 3^He and 4^He isotopes of helium (Z=2) (d) Explain whether the fusion reaction of 3^He…

A: The given reaction is 3He+4He→7Be Mass of 3He, M(3He) = 3.016029 u Mass of 4He, M(4He) = 4.002603 u…

Q: If air is 80% N15 and 20% O16. Using the data below, calculate the average distance a thermal…

A: The density of air is ρa=1.202 gm cm-3 The density of oxygen is  ρo=1.202×20100=0.2404 gm cm-3 The…

Q: An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 148 g…

A: Given problem is based on the carbon dating. One of the useful applications of radioactive decay is…

Q: (2) What is the mass defect of a He atom if the atomic mass is 4.002603 amu? Answer: ---- mass…

A: 2) The mass defect  Additional Information: The mass of the proton, mp is 1.007276 u.…

Q: The radionuclide 64Cu has a half-life of 12.7 h. If a sample contains 5.50 g of initially pure 64Cu…

A: Half-life of 64Cu,

Q: The radioactive isotope 198Au has a half-life of 64.8 h. A sample containing this isotope has an…

A: Given data: The half -life of A198u is T1/2 =64.8 h The initial activity of the sample ,A =40 μCi…

Q: What is the binding energy per nucleon for ?? 13 27 (Aluminum – 27)? Note: A neutral ?? 13 27…

A: The binding energy of a nucleus is the energy required to completely disassemble the nucleus into…

Q: The number of radioactive atoms in a sample decay as the emission of radiation proceeds and this may…

A: Radioactivity

Q: half-life of element

A: Given: Half life time of an element X is t12=500 years Initial mass of element is 8 g Find: Final…

Q: The radium isotope 226 Ra has a hall-life of 1600 years. A sample begins with 3.50x1010 226 Ra atoms…

A: The half-life of 226Ra is T1/2 = 1600yr and the Initial amount is N0 = 3.50 x 1010

Q: A piece of charcoal (totally carbon) from an ancient campsite has a mass of 262 grams. It is…

A:

Q: The uranium decay series from U-238 to stable lead (Pb-206) is: *U → Th → "Pa → U → Th → Ra → Rn →…

A: When a radionuclides emits alpha particles its mass number decrease by 4 and atomic number decreases…

Q: 2H is a loosely bound isotope of hydrogen. Calleddeuterium or heavy hydrogen, it is stable but…

A:

Q: In the following list of nuclides, identify (a) those with filled nucleon shells, (b) those with one…

A: If both Z and N numbers are magic numbers, it is called as doubly magic nucleus. Which are extremely…

Q: An unknown element X has the following isotopes: ⁶⁴X (49.00% abundant), ⁶⁶X (28.00% abundant), ⁶⁸X…

A:

Q: old campfire is uncovered during an archaeological dig. Its charcoal is found to contain less than…

A: Half life of particle T1/2 = 5730 yearAmount of 14C left = 1/1000 initial 14CN = 0.001N0

Q: 234 U has an time constant 3.13 x 105 years. How long will it take to reduce a sample of 6,542 234 U…

A: Given data, At the start N0=6542 At the end N=3646 Time constant τ=3.13×105 years

Q: The unified atomic mass unit, denoted u, is defined to be 1 u = 1.6605 × 10^-27 kg. It can be used…

A: The average mass of a nucleon in a nucleus is Mn = 1 u = 1.6605 × 10-27 kg

Q: The uranium decay series from U-238 to stable lead (Pb-206) is: 238U 92 Pa 210PO → 206 Pb 234U → 230…

A: The uranium decay series from U-238 to stable lead Pb-206 is given as, U92238 → Th90234 → Pa91234 →…

Q: The half-life of 30P is 2.50 minutes. If a sample of 30P has 1.60 x 1010 nuclei present initially,…

A:

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.