What could happen if there is no nucleosynthesis and nuclear fusion ? What could happen if there is no light elements formed.

Q: How many half-lives have passed if about 3% (rounded) of the original parent material is left?

A: How many half-lives have passed if about 3% (rounded) of the original parent material is left?

Q: An ancient club is found that contains 130 g of pure carbon and has an activity of 7 decays per…

A: The expression for the initial activity,

Q: A hypothetical radioactive isotope has a half life of 10 minutes. If you start with 100 grams of…

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Q: One of the many isotopes used in cancer treatment is 198 79 Au , with a half-life of 2.70 d.…

A: Given Isotope  19879Au Half life  2.7 d To find out The mass of this isotope that is required to…

Q: Which refers to the continuous release of nuclear energy caused when one fission reaction triggers…

A: When a nucleus fissions reaction takes place, the neutron breaks the target nucleus into further…

Q: What is given off by alpha decay?

A: When an atom experiences an alpha decay, it gives off an alpha particle made up of two protons and…

Q: hat atomic number, mass number, and element results when a Radon-222 atom emits a gamma ray through…

A: As we know that the atomic number of Radon is 86 and mass number is 222.

Q: If the half-life of Uranium 235 is 700 million years, what would its third-life be?

A: Given data: The half life of Uranium 235 is t1/2=700 million years.   The expression for the…

Q: What is the number of a nucleus?

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Q: How is chemical burning similar to nuclear fusion?

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Q: What nuclear reaction involves changes in the core or nucleus.

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Q: 6) A radioisotope has a half-life of 6 hours. If there are 10undecayed atoms, how long will it take…

A: Recall N=N0e-λt and t1/2=ln2/λ

Q: A particular isotope has a half-life of 1 minute. If you start with 1 gram of this isotope, how much…

A: In the given question, We have to determine the remaining quantity of the isotope after 10 minute.

Q: the year 2005, a picture supposedly painted by a famous artist some time after 1555 but before 1605…

A: Let total time taken =t

Q: Radium-226 is a common isotope on Earth, but it has a half-life of about 1600 years. Given that…

A: The decay chain of Uranium-238 gives Radium-226 which is stable isotope. The half-life of…

Q: .    The half-life of Uranium-237 is 5.83 x 10^5 seconds. If you have a sample with 5.89 x 10^24…

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Q: How much ionising radiation is needed to get infertility? Explain how will it cause you infertility?

A: Radiation therapy to the reproductive organs as well as radiation near the abdomen, pelvis, or spine…

Q: What is the difference between fision and fusion? Fission is about one nucleus breaking apart while…

A: Fission : The phenomenon of splitting of a heavy , unstable nucleus into two or more lighter nuclei…

Q: A human skeleton found at an archeological site is found to have on 1/10 the amount of Carbon-14 one…

A: Given, N= 1/10=0.1 No= 1 T= 5730years We know that, N= No(1/2)t/T

Q: A rock started with 4000 atoms of a parent radioactive isotope and now has 3750 daughter isotopes.…

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Q: If carbon-14 underwent beta decay, what is the resulting nucleus?

A: Beta decay:  A element which undergoes beta decay then the neutron of the atom gets converted to…

Q: The energy release of nuclear fission is tied to the fact that the heaviest nuclei have about 0.1%…

A: It is given that the heaviest nuclei have about 0.1% more mass per nucleon that the nuclei near the…

Q: What happens when one kilogram of uranium undergoes nuclear fission?

A: to find : what happens when 1 kg of Uranium undergoes nuclear fission

Q: 17: A sample of U-235 started with 120 grams.  If the half-life of U-235 has a half-life of…

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Q: What is critical mass?

A: Radioactivity is the process by which an unstable nucleus converts into a stable nucleus. There are…

Q: A radioactive substance has a half life of 15 minutes. How much of a sample of this substancewill…

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Q: What is given off by beta decay?

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Q: If the parent isotope starts with 100 grams, but your samples yield only 12.5 grams of the parent…

A: Given Data Initial mass of sample is M= 100 g Final mass is m = 12.5 g

Q: Why does nuclear fusion only happen at temperatures and pressures?

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Q: Describe briefly the process of nuclear fission, how it is initiated, how a chain reaction may be…

A: Nuclear energy is produced by the nuclear fusion reaction in the core. Uranium-235 and plutonium-239…

Q: Which has the greater number of protons, U-235 or U-238? Which has the greater number of neutrons?

A: Both of them will have same number of protons.

Q: What kind of nuclear power is responsible for sunshine?

A: Reason for sunshine

Q: , how old is a sample if two-thirds of it is now the daughter isotope? What type of decay is…

A: We know , N=N0e-λt Where, N= remaining part of the sample N0=Initial amount of the sample λ=decay…

Q: The isotope Carbon 14 decays by β emission and has a half-life of 5730 years. The carbon in living…

A: This question can easily be solved by applying the concept of radiocarbon dating .

Q: What is the major obstruction to nuclear fusion and why?

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Q: C^14, a form of carbon that is used to find the age of fossils has a half life of 5730 years. how…

A: Given(s): Initial sample, N0=10 g. Half-life, t12=5730 yr Time, t=13,000 yr. Require: Amount of…

Q: If we start with 6.4*10^12 atoms of a radioactive material with a half life of 1.2 days, how many…

A: Half life of radioactive material is the amount of time takes for half of a particular sample to…

Q: What happens when Uranium-238 undergoes alpha decay and then beta decay?   Uranium-238 ->

A: Alpha decay: 92238U → 90234Th + H24e Beta decay: T90234h → P91234a + β-10

Q: reaction

A: Most of the helium in the universe today was formed through the big bang explosion in the universe.…

Q: If 1.99 half-lives have occurred, what amount of radio-active material would be left if you began…

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