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Why is uranium-235 able to undergo a chain reaction while many other nuclei cannot? a.The energy produced is enough to heat the remaining uranium-235 to the point of fission, initiating and maintaining a chain reaction. b.Repetitive positron emission from uranium-235 combines with electrons of nearby uranium-235 atoms to induce a chain reaction. c.The krypton and barium atoms generated are themselves prone to undergoing fission. d.Uranium-235 fission generates three neutrons from one atom, and each neutron can start fission in another uranium-235 atom.
If 30.0 grams of sulfuric acide react with 25.0 g of aluminum hydroxide, identify the limiting reactant.
The combustion of 135 mg of a hydrocarbon produces 440mg of CO2 and 135 mg of H2O. The molar mass of the hydrocarbon is 270 g/mol.
Specific compounds are named in the boxes below and the functional group part of the name is in boldface. For each boldface functional group, draw an expanded structural formula.
starting with solid sodium chloride, how would you make one liter of 2.000 ppm sodium chloride solution
Calculate the molecular weight of the unknown acid.
If the synthesis of 1.0 mol of ATP requires a ?G of 37.7 kJ, how many moles of ATP are synthesized per mole of oxygen consumed
Using the data below. Assume the cells are roughly spherical. What is the average cell surface area
Important information about Conceptual Organic chemistry and What chemical tests might be used to distinguish between pentanal and 2- pentanone; between benzyl alcohol and diphenylmethanol?
An unknown compound has the empirical formula CH2. A 0.050-mol sample of this compound weighs 4.20 g. What is the molecular formula of this compound?
When no single electronic formula can be drawn for a stable molecule so as to maintain the octet rule and still fit the observed properties, the situation is best described in terms of
The electron in the n = 5 level of a hydrogen atom emits a photon with a wavelength of 1280 nm. To what energy level does the electron move?
calculate the molarity of an aqueous naoh solution if 30.10ml of .500m h2so4 is required to reach the end point when
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