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Explain how use of 3 M HCl(aq) could separate it from the other components. To do so: show how acid would change the molecule; identify the phase in which this new species would be isolated in a separatory funnel and explain why it would be found there; and suggest when in the sequence of steps you actually performed, HCl could be used to isolate 4-nitroaniline from the other three components.
explain in detail why there are exactly 14 elements shown in the Lanthanide series of the periodic table.
In calculating the molar enthalpy change for reaction 3, why did the instructions specify to base it on moles of Mg used, rather than moles of H+ (from HCl)
The conjugated system of a retinal consists of 11 carbons atoms and one oxygen atom. In the ground state of retinal. each level up to n=6 is occupied by 2 electrons.
The solubility of which one of the following compounds will increase if the pH of a saturated solution of the compound is lowered
A student dilutes a solution of 0.100 mol of H3PO4 and 0.150 mol of NaOH with water to a volume of 1.00 L but then realizes that the "distilled water" used was in fact dilute hydrochloric acid.a)If the pH of the final solution is 6.50, what are the c..
calculate the weight of potassium chlorate required to prepare 380ml of wet oxygen collected over water at 20degrees
A 0.5236 gram sample of an unknown monoprotic acid was titrated with 9.94×10^-2 M NaOH . The equivalence point of the titration occurs at 23.72 mL. Determine the molar mass of the unknown acid.
a 249-gram sample of water is heated from 2 degrees c to 85degrees c. calculate the amount of heat absorbed in kj by
Dr. Carvell made up a 5X stock of ONPG stock solution that has a concentration of 50 mN. The molecular mass of ONPG is 354.7. What is the percent composition of this solution
Which of the following elements is expected to have the greatest electron affinity in this group (accepts one extra electron most readily) H , Cl, I, Cs, Li
some amount of potassium dichromatenbsp k2cro7 thatnbsp is 2.335 g isnbsp dissolved in enough h2o to prepare a
The following data were obtained for the decomposition of N2O5 in the presence of 1 atm. N2 at 298 K.time (hr.) P(N2O5) atm P(N2O5) P(N2O5) P(N2O5) (for P(N2)=5 P(N2O5) (atm))
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