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Give the structure of a compound that has a formula of C9H10O2 and has signals in the 13C NMR spectrum at 13.6 ppm (CH3); 59.1ppm(CH2);128.4(CH); 129.7 ppm(CH); 130.5ppm(C);132.8ppm (CH); and 167.0 ppm(C).
Given that benzaldehyde is a meta- director, draw all three resonance structures for the carbocation intermediate that results from STEP 2 in the electrophilic aromatic substitution reaction when benzaldehyde reacts
0.1 M NaCl was slowly added would a precipitate(s) form? if more then one precipitate could form, predict the order of appearance of the precipitates.
The amount of I3-(aq) in a solution can be detrmined by titration with a solution containing a known concentration of S2O32-(aq)( thiosulfate ion). The determination is based on the net ionic equation.
To estimate the percentage of all-trans-lycopene present in the original tomato paste, should you average the percentages obtaned by all the members of your team? If not, what should you do, and why?
explain why the vitamin tablet is crushed before titrating with the iodate titrant.
Suppose you were asked to carry out an aldol condensation reaction between benzaldehyde and acetaldehyde, modeled after the experiment you performed with benzaldehyde and acetone.
Twenty-five milliliters of liquid nitrogen (density = 0.807g/mL ) is poured into a cylindrical container with a radius of 11.9cm and a length of 17.2cm . The container initially contains only air at a pressure of 760.0mmHG (atmospheric pressure) a..
What mass percent sucrose (C12H22O11)should be present in an aqueous sucrose solution to raise the boiling point to 100.00 degrees celsius at this pressure
The absorbance of the unknown solution A=0.4862 +_ 0.0184 abs. units. Determine the un certainty in the concentration of the unknown.
Silicon has been doped with 5 x 10^22 m^-3 of boron atoms. Calculate the conductivity of silicon at (a) room temperature (32 C) (b) at (125 C)
consider the reversible reaction ag lt---gt 2bgat equilibrium the concentration of a is 0.381 m and that of b is 0.154
Calculate amount in unknown from titration and what is the curve supposed to look like - Report the mass of KCl and KI in the original unknown sample
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