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What is the purpose of refluxing the reaction mixture for 45 minutes in nuclephilic substitution (NaBr and 1 butanol and 1 bromobutane experiment?
two hypothetical ionic compounds are discovered with the chemical formulas acl2 and bcl2 where a and b represent
Which protein elutes first from a diethylaminoethyl cellulose ion exchange column with a decreasing pH gradient
The nitrate ion (NO3-) is a very poor nucleophile. In fact, solvents such as water or methanol (also weak nucleophiles) are more reactive nucleophiles than the nitrate ion
The active ingredient of aspirin is acetylsalicylic acid, a monoprotic with a ka = 3.3 x 10 raised to -4 power. What is the pH of a solution dissolving two aspirin tablets, each containing 325 mg of acetylsalicylic acid, in 250 ml of water
write the full electronic configuration for sr he zn br and for each of the following elements indicate which set of
The glutamate and ammonia reaction can couple with the hydrolysis of ATP (such as shown above). What is delta G ran and K for this coupled reaction
Calculate the pre-equilibrium concentration of Fe3+(aq) in a solution made by mixing 2.8 mL of 2.010?3 M Fe(NO3)3 and 7.2 mL of 2.010?3 M NaSCN. Assume the final volume is 10.0 mL.
Aspirin (acetylsalicylic acid) is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolved 2.00 g of aspirin in 0.600 L of water and measured the ph . What was the ka value calculated by the student if the ph of the..
the electric potential energy associated with an electron and a proton is -4.35*10^-18 j. what is the distance between these two charges?
A 3.5514 g of a chromium oxide was found to contain 2.4299 g of chromium and 1.1215 g oxygen. What is the empirical formula for this chromium oxide
A ruby laser produces radiation of wavelength 633 nm in pulses with a duration of 1.00*10^-9s. If the laser produces 0.475 J of energy per pulse, how many photons are produced in each pulse?
Draw the carboxylic acid would be formed if the malonic ester synthesis (alkylation of diethyl malonate followed by hydrolysis and decarboxylation) were carried out with a large excess of diethyl malonate, one equivalent of 1,5-dibromopentane, and..
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