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A and B are stereoisomers. They are nonsuperimposable and are mirror images of one another. Which of the following best describes the relationship between A and B?
A. Constitutional isomersB. Cis-trans isomersC. DiastereomersD. EnantiomersE. structural isomers
Consider a 53.5 g sample of H2O(g) at 117°C. What phase or phases are present when 134 kJ of energy is removed from this sample.
A sample of gas confined in a 2.0L container at 930 Torr and 25oC was heated to 45oC. What was the final pressure?
calculate the minimum concentration of mg 2+ that must be added to .10 M NaF in order to initiate a precipitate of magnesium flouride.
What is the value of Delta S when 2.7g of CH4 is compressed from 29.0 L to 18.0 L at a constant temperature of 100 C?
Calculate the [H3O+] concentration in 0.45 M solution of barbituric acid, HC4H3N2O3. Ka for barbituric acid is 1.0 X10 ^-5.
which of the following best describe the geometry about the carbone-carbon double bond in the alkene? choose from the following answer. (a) E (b) Z (c) neither E nor Z
Calculate the equilibrium partial pressures and the total pressure if the initial partial pressures are PPCL 5 = 3.08atm, PPCl3 = 1.92atm, and PCL2 = 1.6atm.
A drop of NaOH titrant adheres to the side of the buret (due to a dirty buret) between the initial and final reading for the titration. As a result of the "clean glass" error, will the molar concentration of the NaOH be reported too high or too lo..
The water level in a graduated cylinder initially at 220 rises to 279 after a piece of lead is submerged. What is the mass in grams of the lead.
Calculate the pH of a 1.39x10^-2 M solution of the decongestant ephedrine hydrochloride if the pKb of ephedrine (its conjugate base) is 3.86
the net change in entropy of the system and surroundings considered together must be a positive quantity; (e) the entropy of the universe must remain constant.
Calculate the pH at the equivalence point of a titration of 0.3326 g of THAM (pka=5.92) dissolved initially in 25 mL of H2O
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