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Explain how are excess sulfuric acid and the excess methanol removed from the crude ester after the reaction has been completed?
How many grams of sodium lactate should be added to 1.00 L of 0.150 lactic acid ( or ) to form a buffer solution with = 4.10? Assume that no volume change occurs when the sodium lactate is added.
an empty erlenmeyer flask weighs 194.4 g. when filled with water d 1.00 gcm3 the flask and its contents weigh 489.1
describe the coordination geometry e.g. octahedral for each metal ion and the mxnlm formula for deoxy and oxy form of
How many mL of 0.250 M NaOH are needed to completely saponify 240. g of of glyceryl trioleate (triolein)?
Normal gastric juice has a pH of about 2. Assuming that gastric juice is primarily aqueous HCl, what is the HCl concentration.
in the alkylation of cyclopentanone better yields are obtained by first reacting cyclopentanone with an equivalent of
The rate constant for decay of 45Ca20 is 4.233x10-3/day. What is the half-life of 45Ca20? a) 81.86 days b) 163.7 days c) 327.4 days d) 409.3 days e) none of these
what happened when the isolated fraction, floating on top of the solution,
Consider the titration of 80.0 mL of 0.100 M Ba(OH)2 by 0.400 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added.
question what is the molar heat of combustion of benzene c6h6 if the combustion of 1.00g of benzene causes the
the ratio of the number of nuclei in the first excited nuclear energy level to the number of of nuclei for a nucleus with ε1 - ε0 = 1MeV at 25C. At what temperature is kBT on the order of ε1 - ε0. Note 1MeV = 10^6eV
Determine How much sodium hydroxide (in grams) is required to form 546 mL of solution with a pH of 10.00?
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