rect answers, but you should do your best to do so. They will be used only for t
ID: 304149 • Letter: R
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rect answers, but you should do your best to do so. They will be used only for the Question 1 - Attempt this question without getting help, using only a periodic table Putonium was originally discovered in 1940 by two teams working independently to create synthetic elements eavier than naturally-occurring elements Glenn Seabo create and isolate a sample that the element could be used as part of the Manhattan Project. There are multiple steps in the synthesis mechanism, beginning with the bombardment of uranium-238 with deuterium (hydrogen-2) Write an equation describing the bombardment of uranium-238 with deuterium. Two neut produced. rg's research team at UC-Berkeley were the first to of plutonium-238 in 1941, but did not publish their results, as they had discovered rons are In the second step of the mechanism, the neptunium-238 that forms as a product of Step I then radioactively decays to form plutonium-238 Write an equation describing the decay of neptunium-238 to form plutonium-238 What kind of decay is this? Though plutonium-238 is not the isotope used for atomic bombs, it is also radioactive. It undergoes alpha decay Write an equation describing alpha decay of plutonium-238. Plutonium-238 is used as a fuel source for a variety of applications. Plutonium generators power the Voyager and Cassini space probes, ensuring that they have electricity for decades after leaving our atmosphere Plutonium power cells have also been used for specialized heating, as in SCUBA. Plutonium-238 power and heat sources are typically shielded with a layer of metal Should people generally be worried about the effects of radiation from shielded plutonium-238 ower sources? Why or why not? Plutonium-238 has a half-life of 87.7 years. If a sample of plutonium-238 originally weighs 0.01208 g, how much time will pass before only 0.000755 g of the original sample remains? nstructor Feedb review writing review types of radiation missing some instructions looks great-keep it upl review properties of radiation ?only minor errors be careful with symbols double ?see instructor or tutor for better explanation of topic nuclear equations review hail-life ?equation snot balanced double-check math check details calculations missing time unitsExplanation / Answer
ans)
from the above inforamtion that
the following equations are
92U238 + 1H2 gives 93Np238 + 2 0n1
93Np238 gives 94Pu238 + -1e0 this is beta decay
alpha decay
94Pu238 gives 92U234 + 2He4
Due to the emission of an alpha particle, peoples are generally worried. an alpha particle is an ionizable radiation.
Along with alpha, some amount of energy is released as gamma radiation. this can also affect people. However, these particles cannot travel more distance, it cannot cross even a thin paper. If it is properly covered no need to worry
k = 0.693/half life
= 0.693/87.7
= 0.0079 yrs-1
t = -2.303/k log [final concentration]/[initial concentration]
= -2.303/0.0079 log 0.000755/0.01208
= 351.02 years
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