If you know that the natural element samarium (its mass number 146) contains the radioactive isotope samarium (mass number 147) with a rate of 15.1% that is dissolved by the dissolution of alpha particles. If you know that one gram of natural samarium gives 100 alpha decay every second, then the half-life of the radioactive samarium isotope in years is

Q: One of the radioactive nuclides formed in nuclear power plants is hydrogen-3, called tritium, which…

A: According to theroy of Radioactivitythe decay rate of a nuclei which has initially N0 nuclei  at any…

Q: When a nucleus of emits an alpha particle, what are the atomic number and the atomic mass of the…

A: In alpha decay, an unstable nucleus will emit an alpha particle, which is a helium nucleus composed…

Q: A nuclear fission reactor uses nuclear reactions, of which the following is typical: *? +6? → ? + Te…

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Q: How many alpha particles are emitted per second from 1 microgram of radium?

A: we know that,  1C= Activity of 1 g of Radium=3.7×1010 days

Q: A radioactive material decays at a rate proportional to its amount . If the material has a half-life…

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Q: Isotopes of an element contain: A. the same number of protons but different number of neutrons B.…

A: The nucleus of an element consists of protons and neutrons. The electrons don't reside inside the…

Q: Cobalt-60 has a half-life of approximately 5 years. If 53g of the material was stored for 20 yers,…

A: mi=m0×2nmi: initial mass=53 kgm0=remaining mass n= number of periods

Q: 4. Cobalt-60 has a half-life of approximately 5 years. If 53 g of the material was stored for 20…

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Q: If 2.25 gg of orange mercury oxide decomposes to 2.09 gg of liquid mercury and oxygen gas, what is…

A: Given information: It is mentioned that 2.25 g of mercury oxide decomposes to 2.09 g of liquid…

Q: In the fall of 2002, scientists at Los Alamos National Laboratory determined that the critical mass…

A: The expression for find volume of the sphere is V=mρ Substitute values in the above equation…

Q: When gamma is 1.88, what is beta

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Q: When thorium decays by emitting a beta particle, what is the atomic number of the resulting nucleus?

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Q: A sample of polonium-208 has a half-life of 2.898 years. What percent of polonium-208 remains after…

A: The half-life of a radioactive substance is the time required for a quantity to reduce to half of…

Q: Iodine-131 has a half-life of 8 hours. If a solution containing 5 grams of iodine-131 is injected…

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Q: The radioactive element 2760Co  has a half life of ______ years. If you had a sample of 17 g, about…

A: Given: The mass of sample (m) = 17 g. The half-life of cobalt (T1/2) = 5.27 years. The life of…

Q: How many neutrons are in uranium-235?

A: The number of protons equals the atomic number. The number of protons and neutrons together…

Q: If you purchased 3.61 Mu Ci of sulfur-35, how many disintegrations per second does the sample…

A: Given: Initial amount of sulfur-35 = 3.61 x 10-6 Curieand 1 Curie = 3.7 x 1010 Bq1 Bq = 1 decay/s

Q: These questions are sample activity in our physics lab, and I still don't get it. can you please…

A: There are some rules for significant numbers 1) The zero preceding the non zero value will not be…

Q: The half-life of l-137 is 8.07 days. If 25 grams are left after 40.35 days, how many grams were in…

A: The formula of the radioactivity is  where, N is the amount left, No is the initial amount, t is…

Q: Elemental carbon has 6 protons and 6 neutrons. This is often described as carbon-12. Carbon-13 has 6…

A: Mass Number = Number of protons + Number of neutrons For Plutonium: Mass Number = 244 Number of…

Q: A clinical technician finds that the activity of a sodium-24 sample is 1,024 cpm. What will be the…

A: Half life is defined as the time required for the radioactivity of a radioactive element to drop to…

Q: If 5g of iodine is in 250mL of iodine tincture, calculate the percentage(%w/v) of iodine in the…

A: Mass of iodine "m"= 5g  iodine in iodine tincture  "V"= 250ml

Q: how much energy (in Joules) is released by Helium -4 during a nuclear reaction?

A: Given: Helium-4  Asked to find energy released during a nuclear reaction.

Q: The efficiency of a nuclear power plant is 35.4.0%. If 243.05.0 kW of power are produced by the…

A: The efficiency of a nuclear power plant is 35.4 %

Q: f the half-life of cesium-137 is 30 years, approximately how much time will be required to reduce a…

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Q: The half-life of Uranium-237 is 5.83 x 105 If you have a sample with 5.89 x 1024 atoms in it, how…

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Q: what is the percentage of mass of CI in MgCI2 if it is 25.5 percent Mg by mass

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Q: To say whether an atom is an isotope of an element, the number of protons and electrons must be…

A: Required : The correct option.

Q: Suppose you are designing a proton decay experiment and you can detect 50 percent of the proton…

A: In a proton decay experiment 50 percent of proton decay in a tank of water is detect.

Q: The half life of 85Kr is 11 years. What is the mass of one millicurie of 85Kr? O 9.2 microgram O 30…

A: Given  Half life = 11year  T½= 11*365*24*60*60 sec =3.48*10⁸ sec I millicurie = 3.7*10⁷ /s  Lambda=…

Q: One in 6500 water molecules contains a deuterium atom. If all the deuterium could be extracted from…

A: The total number of water molecule in 1 cubic meter is, Now the number of D-D fusion reaction is,

Q: The Neutron number N is the number of neutrons in the.

A: The neutron number is the number of the neutrons in the Nuclide or Nucleus.

Q: The abundance of 40K is 0.012% of total natural potassium. The human body is 0.25% potassium by…

A: Since, the 70 kg human body has 0.25% of potassium by weight in which percentage of 19K40 is further…

Q: Substance X has a half-life of 10 years, if you start with 1000 grams, how much will be left after…

A: Given data:  Half life (t1/2)= 10 years Initial quantity (N0) = 1000 grams  Time (t)  = 100 years…

Q: Iodine-131, a beta emitter, has a half-life of 8 days. A 7-gram sample of initially pure iodine-131…

A: Half life = 8 days initial mass = 7 grams 1) After 1 half life , that is after 8 days mass left =…

Q: During early research in nuclear energy, why were scientists surprised that the products from…

A: Because all known changes always started and ended with same amount of mass.

Q: A silver coin has a mass of 17.75 g. If the atomic mass of silver is 107.868 u, how many silver…

A: mass = 17.75 g Atomic mass of silver = 107.868 u Number of moles of silver present in the coin =…

Q: If the element Europium is 276 grams then how many atoms would it have?

A: Natoms=NAvamMmolar

Q: The efficiency of a nuclear power plant is 36.1.0 %. If 280.16.0 kW of power are produced by the…

A:

Q: The value of Gm w

A:

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.