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One of the early experiments in the development of the atomic bomb was to demonstrate that 235U and 238U is the fissionable isotope. a mass spectrometer was employed to separate 235 UF6 from 238UF6. calculate the value ?S for the separation of 100mg of the mixture of gas, given that the natural abundances of 235U and 238U are 0.72% and 99.28% respectively, and that of 19F is 100%
If 285.5 mL of SO2 reacts with 158.9 mL of O2 (both at 315K and 50.0 mmHg) what is the limiting reactant and theoretical yield of SO3
The mysterious peptide X is a nonapeptide that cannot be sequenced by Edman degradation. However, it is susceptible to cleavage by proteases, and the resulting peptide fragments can be sequenced.
calculate the number of protons in a sample of pure water with a volume of 1 mL. Then, calculate the fraction of water that is ionized.
calculate the concentration of each ion present in a solution that result from mixing 50 ml of a .20 m naclo3 solution
Write an equation for the hydrogenation of glyceryl trilinolenate, a fat formed from glycerol and three linolenic acid molecules
Which one of the following reactions occurring at 25 ?°C is the formation reaction of H2SO4(l) a. H2(g) + S(s) + 2O2(g) => H2SO4(l) b. H2SO4(l) => H2(g) + S(s) + 2O2(g) c. H2(g) + S(g) + 2O2(g) => H2SO4(l) d. H2SO4(l) => 2H(g) + S(s) + 4O(g) e. 2H..
The rate constant increases by a factor of 2.00 when the temperature is increased from 80 C to 115 C. estimate the arrhenius activation energy.
Consider the synthesis of benzocaine. If a factory starts with 407 kg of pure 4-aminobenzoic acid and ends up with 433 kg of benzocaine, what are their theoretical and percent yields?
Chromatographic column, it is important to let the level drop in the column eluent to the level of the sand before applying the solution of the compound to be separated. What effect would have on the efficiency of separation ignore this recommenda..
have 2.50 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. determine the concentration of the sugar solution after the water has been added.
A wick of filter paper is placed in a TLC developing jar, and the atmosphere in the jar is saturated with solvent before a plate is developed. What would happen if a plate were developed in a jar with an atmosphere not saturated with solvent vapor
How many moles of hydrogen are produced by the unbalanced reaction below when 0.195 moles of magnesium and 0.102 moles of water are allowed to react? Mg (s) + H20 (l) > Mg(OH)2 (s) + H2 (g)
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