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If you are told that the purity of compound Z is 92% as well as the reported value for its molar extinction coefficient is 45000 M -1 cm -1 at 605 nm. Explain what should you measure as the e of this impure compound Z?
For the following gaseous rxn, if the system is heated and compressed, which way will it shift to restore equilibrium. A + B 2C + D + Δ
Determine which of them exhibit resonance. (In other words, which of the following molecules exhibit resonance? Note: there is more than one answer and you must choose all of the molecules in the list that exhibit resonance.)
HA+NaOH=NaA+H2O stating with 0.20mol HA and 0.08 mol NaOH. the mixture was diluted to a total volume of 1L and the pH was measured to equal 4.8, what is the Pka of the acid
question 1. if 0.015 m nacl shows conductivity of 12000 unites based on total ion concentration what conductivity
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 77% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 10-12.]
HA is a weak acid. An aqueous solution 0.030 M in HA has a pH of 3.93 at 25*C. What is Ka for HA
What volume and mass of the ethanol/water mixture did you collect from the simple distillation
calculate te single ion actvity coefficients for Cs^+, Cd^2+, Al^3+ and dissolved H2CO3 s a function of ionic strength
The freezing point of a solution of acetic acid and water is -0.278C. What is the molality of the solution
What volume of this solution is required to make 1.50 L of 2.75 mol/L NH3(aq)? Give your answer in millilitres, accurate to three significant figures.
The initial rates at various substrate concentrations for an enzyme-catalyzed reaction are as follows.
A mono methyl-substituted 1-naphthol is permitted to couple with a diazonium prepared from a mono-substituted hydroxyaniline. Explain how many different coupling products can be acquired assuming all patterns of the starting materials are availabl..
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