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Neutrons are very important in the fission of uranium, the manufacture of the artificial isotope plutonium-239, and in the fission of plutonium-239. The function of the control rods and moderators in a nuclear power plant are very important in the processes mentioned. Select the purpose for control rods (from answers A - D) and for moderators (from answers E - H).
Question options:
A) slow the neutrons down so they can cause fission.
B) absorb the heat produced so that it can be carried to an external turbine.
C) absorb neutrons to control the amount of fission that is occuring.
D) provide the fuel needed for fission to occur.
E) carry the heat produced from the fission reactions to an external turbine.
F) absorb neutrons and thereby control the fission reactions.
G) protect the workers and the environment from radiation.
H) slow down the neutrons produced from the fission reactions so that they can be absorbed by more fuel.
Which of the following would you expect to be a molecule and which would you expect to be part of an ionic solid? Drag the appropriate compounds to their respective bins. CO, NO, LiCl, HBr, BaS, RbCl, SrO, LiBr
How many grams of carbon dioxide (CO2) can form when a mixture of 4.95 g of ethylene (C2H4) and 3.25 g of oxygen is ignited. Assume complete combustion to CO2 and H2O.
Use IUPAC rules to draw and/or name the following organic molecules. (you can draw the carbon chains only with functional groups...)
The activation energy of a certain reaction is 45.3kJ/mol . At 24{~}^{\circ}\rm C , the rate constant is 0.0160s^{-1} . At what temperature in degrees Celsius would this reaction go twice as fast?
Considering the likely HOMO and LUMO of L-serine methyl ester, what would be the most electrophilic atom and what would be the most nucleophilic atom
A. A student places 2.10 L of water in his dormitory room, which has the volume of 4.06 x10^4 L. He seals the room and waits for the water to evaporate. At 25 deg C, the density of water is 0.997 g/mL
adding the two portions of water into your calorimeter the temperature of the mixed portions of water to be 45 oC. determine the heat capacity of the calorimeter?
Some enzymes require a nonprotein prosthetic group in order to function. The nonprotein part of these enzymes are called
The measured density of a certain gaseous amine at 0 C as a function of pressure is: P(atm) 0.200 0.500 0.800
A sample of gas weighs 4.542g and has a volume of 870.0mL at 945.0 torr and 39.0 degrees Celsius. What is the molar mass
Important information about Identifying unknown substances, Compound A (C7H14O) burned with a yellow, nonsooty flame and did not decolorize a bromine-methylene chloride solution. It did give a positive 2,4-dinitrophenylhydrazine test
Predict the sign of Change in S for this reaction and explain. -Calculate the Change is S from standard molar entropy values. S for Na2O2(s) = 95 J/mol K
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