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The pH of a 0.010 mol L-1 solution of a weak monoprotic acid is 2.09 at 25oC. What is the pKa for this acid?
the rate constant for a certain reaction is 3.40times10-3 . if the initial reactant concentration was 0.750 what will
One can approximate boiling point at reduced pressure using a pressure-temperature nomograph. What would you expect the observed boiling point to be at 50 torr for a liquid that has a boiling point of 280 degrees celsius at 760 torr
Calculate the equilibrium constant for the reaction below at 25 degrees C. Co(s) + 2 Cr^ 3+(aq) -> Co^2+(aq) + 2 Cr^2+ (aq) given the following thermodynamic information
What is the mass of a glass empty beaker? What is the mass of a glass beaker with 60mL water?
A tank contains 40 lb. of air, 20 lb. of CO2 and 30 lb. of SO2. Compute the volume of the tank if the total pressure of the mixture is 44.08 psi at 86°F. What is the partial pressure of each constituent and the average molecular weight of the mixt..
A piece of silver of mass 362 g has a heat capacity of 85.7 J/C (celsius degrees). What is the specific heat of silver?
In a flowchart, show how one can separate acetophenone, benzyl alcohol, and benzamide from each through acid/base extraction.
tetrafluoroethylene c2f4 can be converted to octafluorocyclobutane which can be used as a refrigerant or an aerosol
Write a balanced chemical reaction for photosynthesis (accounting for both the light and dark reactions). Compare the pathways of photosynthesis and oxidative phosphorylation.
Florine is so reactive that it forms compound with material insert to other treatment when 0.448gm of plantinum is heated in florine, 0.71gm of dark red, volatile solid forms. What is emperical formula
Based on the sign of E°cell, classify these reactions as spontaneous or nonspontaneous as written. Assume standard conditions. Zn^2+ (aq) + Sn(s) --> Zn(s) + Sn^2+(aq) Al^3+ (aq) + 3Na(s) --> Al(s) + 3Na^+ (aq) Ni^2+ (aq) + S^2- (aq) --> Ni(s) + S..
The process of boiling a reaction mixture and condensing the solvent vapors back into the reaction vessel is known as
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