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if one cubic centimeter section of a reactor has a macroscopic fission cross section of 0989 cm-1 and if the thermal
calculate the number of collisions required to slow a neutron from an energy of 285 mev to a thermal energy of 0025 ev
the addition of a crystal of sodium chlorate to a sodium chlorate solution causes additional crystals of sodium
one uranium-238 atom has a mass of 238050785 amu a calculate the mass defect for uranium-238 b calculate the binding
if the average fractional energy loss per collision in a material is 075 what will be the energy for a 198 mev neutron
what mass of magnesium sulfate is dissolved in 400ml of a 0800 m solution of magnesium
polyethylene is a synthetic polymer or plastic with many uses 140 g of a polyethylene sample was dissolved in enough
a block of zinc has a density of 7133 gcm3 and atomic weight of 6539 g a calculate the atom density of the zinc b find
pentane c5h12 and hexane c6h14 form an ideal solution the vapor pressures of pentane and hexane at 25deg c are 511 torr
an isotonic solution will produce an osmotic pressure of 784 atm measured against pure water at human body temperature
with particular emphasis on the stereochemical features what are the products expected to be formed in good yeild in
a 0207 g sample of an alloy containing lead is dissolved in nitric acid to produce an aqueous solution of leadii ions
write the net redox reaction that occurs in the galvanic cell 1 pt zns zn2aq 100 m pb2aq 100 m
what is the cell diagram for the spontaneous cell involving the fe3 fe2 0771v half cell and the zn2 zn -0763 v half
calculate the mass of i2 produced at the anode if a current of 285 a is passed through a solution of ki for 56
identify r and r in equation 1 when the ester aspirin is made from salicylic acid and acetic acid calculate the
i desperately need help with this last question i have if somebody could please solve it and show the steps ill be
predict qualitatively which of the following aqueous solutions a b c or d each containing 20 moles of the given
zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation zns 2hclaq
predict the sign of delta ssystem for the following processes a molten fe solidifies b licls is formed formed from lis
explain in terms of their structures why each of the following pairs of substances have very different chemical and
does the entropy of a system change when a a solid melts b a gas liquefies c a solid
calculate the hydrogen ion concentration in a solution of fruit juice having a ph of 425 a10 times 10-14 md25 times
calculate the h ion concentration in a 88 times 10-4 m caoh2 solution a88 times 10-4 md11 times 10-11 m b18 times 10-3
the oh- concentration in a 25times10-3 m baoh2 solution is a40 times 10-12 md12 times 10-2 mb25 times 10-3 me0025 m c