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Mercuric oxide HgO can be examined by reaction by iodide as well as then titration with an acid HgO + 4I- → HgI42-+ 2OH-. Explain what is it's equivalent weight?
Elemental analysis of aspartame gives C 57.1%, H 6.2%, N 9.5%, with the remainder of mass accounted for by O. A molecular ion is observed in the mass spectrum at 294 amu. What are the empirical and molecular formulae of aspartame
What atomic or hybrid orbitals make up the sigma bond between Br and Cl in bromine trichloride, BrCl3 ?
There is a eutectic at 1 0C, the eutectic solution being 20 mol % in B, and an unstable compound, AB2, which decomposes at 30 0C. Depict and label the simplest melting point diagram consistent with the preceding information. Outline with reasonabl..
Taking 100 kg of the 20% feed solution as a basis, draw and label a flowchart of this process labeling both masses and volumes, and do the degree-of-freedom analysis. Calculate the feed ratio
What is the mechanism for turning 1-bromotbutane when it reacts with KI and DMF into n-butyl acetate?
determine the net change of oxidation number of each of the elements in the redox equations.
What specific observation identifies the endpoint of the titration. What is the molar concentration of K+ (aq) in the reaction mixture at the equivalence point
Calculate the difference in energy between the second and first levels and between the fourth and third level (i.e. find Delta E = En Upper - En Lower for n upper=2, n lower =1 and for n upper = 4, n lower =3)
Calculate the ionic strength of a solution that is 0.05 mol/kg in Na3[Fe(CN)6](aq), 0.02 mol/kg NaCl(aq),
Write balanced molecular, total ionic and net ionic equations for the reaction of aqueous copper (II) sulfate and aqueous sodium sulfide. Be sure to include proper phase labels.
The standard heat of formation of WO3(s) is -843 KJ/mol, and its standard molar entropy
would a given amount of flourine react with different masses of the two hydrogen isotopes? Does this violate the law of definite proportions.
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