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Considering the two resonance structures of the conjugate base of saccharin, which atom (N or O) bears more of the negative charge? explain why.
Sulfurous acid, H2SO3, is a weak diprotic acid (pKa,1=1.89 and pKa,2=7.21 at 25oC). What is the pH of 0.121 mol/L H2SO3(aq) at 25oC.
If the sample contains a combined total of 1.90 mol and has a total mass of 60.3g, what are the percentages of CO2 and Ne in the sample by mole?
what vibrational bands would be prominent in the Ir spectra of 3-aminoacetophenone and 1-(3nitrophenyl) ethanol?at approximately what frequency
The titration required 35.46 mL of 0.1052M Na2S2O3 solution. A faded price label on the gallon bottle read $0.79. The density of the bleaching solution was 1.10 g/mL Calculate the number of moles of S2O32- ion required for the titration
if 0.150 moles of salicylic and excess acetic anhydride are used during a synthesis of aspirin, how many grams of aspirin will be obtained if the reaction gives a 38% yield.
The reaction is first-order in N2O5, with the specific rate constant 6.08 x 10-4/s. Calculate the reaction rate at these conditions. a. [N2O5] = 0.200 mol/L b. [N2O5] = 0.319 mol/L
At equilibrium the total pressure and density of the gaseous mixture were 1.80atm and 1.60g L-1, respectively. Calculate Kc and Kp.
A 1 mM solution of HCl is prepared, and enough KCl is added to adjust the ionic strength to u= 0.1 M. Calculate the pH of the solution
The leaves of a Rhubarb contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must be removed before the stems are used to make rhubarb pie. If pKa1=1.23 and pKa2=4.19, what is the pH of a .0282 M solution of oxalic acid
Starting with 1-pentanoic acid and using any other reagents, outline synthesis for 1-penten-2-ol
calculate the ph of a solution that is made by combining 125 ml of 0.050 M hydrofluoric acid with 50 mL of 0.10 M sodium fluoride
To better understand why, scientists synthesized artificial protein mimics that were linked by ester bonds instead of the amide functionality ( the R-group side chains all remained the same). They found that these mimics did not form highly organi..
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