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Question- Provide a chemically sound explanation for a missing 3rd equivalence point on titration curve of phosphoric acid. Which of the inflection points is more easily observed and why?
I require skilled aid to answer the given problem
determine the minimum concentration of the percipitation the cation from the solution of the left. 0.035 M BaNO3; Naf.
The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 kJ/mol but the enthalpy for oxidation of graphite to carbon dioxide is -393.4 kJ/mol. Find the enthalpy of reaction for graphite going to diamond.
why is benzyne such a reactive moleculewhy is it so unstable? is there any reason other than the fact that triple bonds
at 80 deg c the vapor pressures of pure liquids x y z are 385 190 66 mm hg respectively. what pressure must be exerted
A cube of brass, 2 cm on a side, is heated until the temperature of the brass is 75oC. The cube is quickly added to 100 mL of water at 23oC. What is the final temperature of the mixture? The specific heat of brass is 0.385 J/goC.
Describe how to prepare 50.0mL of 5.30 x10-2 M solution from pure drug and water.
2.50 moles of COBr2 are introduced into a 2.00 liter flask at 0degrees and heated to a temp of 73 degree celcius. At equilibrium, the equilibrium constant is .190. What is the percent disassociation? what is the equilibrium concentration of each s..
How many grams of dry NH4CL need to be added to 2.30 L of a 0.400 M solution of ammonia,NH_3 , to prepare a buffer solution that has a pH of 8.53? Kb for ammonia is 1.8*10^-5.
Estimate the average area of a cell in square micrometers, and the diameter of a single cell in micrometers, using the data below. Assume the cells are roughly spherical. What is the average cell surface area
The concentrations of NaCl and KI are at 0.100 M and 0.090 M, respectively, in the following electrochemical cell:You'll need to use the Nernst equation to solve this problem
Calculate the osmotic pressure at 25°C of an aqueous solution of 1.00 g/L of a protein having molar mass=2.50×104 g/mol.
A system receives 93 J of electrical work, performs 227 J of pressure-volume work and releases 155J of heat.What is the change in Internal energy of the system?
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