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Question- You need to prepare 100.0mL of a pH=4.00 buffer solution using 0.100 M benzoic acid pKa = 4.20 and 0.200 M sodium benzoate
My main issue is that I think I have to have a balanced reaction in order to do the calculations.
What volume, in liters, of O2 at 35 degrees C and 1.19 atm can be produced the decomposition of 50.0 g of KNO3? 2KNO3(s)-->2KNO2(s)+O2(g).
What is the minimum voltage needed to produce a reaction in the electrolysis of copper(II) sulfate using inert electrodes. This is he same as asking what is Ecell for the electrolytic cell.
A beaker contains a solution that is 0.50M in Au3+ ion and 0.25 M in Ag+ ion. A solution of sodium chloride is slowly dripped into the beaker with stirring. Which ion will precipitate first, the gold or the silver
It is well-known that the farm claims the milk contains the fat level of 2.5%. Does the lab test result assist this claim or not at the confidence level of 95%
A mixture of helium and neon gases at 237 K contains three times the number of helium atoms as neon atoms. The concentration (n/V) of the mixture is found to be 0.150 mol/L. Assuming ideal behavior, what is the partial pressure of helium
Illustrate and show calculations how you would prepare 2 liters of a pH 8 buffer using 0.4 M Na3PO4 and 0.5 M HNO3. Explain reasoning at each step of the way ion calculation.
Find the change in entropy (S) for the system, surroundings and universe for the conversion of 1 mol of ice at 0 degrees C and 1.00 atm to 1.0 mol of steam (vapor) at 100 degrees C and 0.50 bar. Useful data might be
the large diameters are 100mm and the venturi diameter is 20mm. sg 13.54 a what is the flow of water 60degree f that
A hydrocarbon gas contains 81.71% carbon and 18.29% hydrogen, by mass. At STP. 4.20 L of the gas has a mass of 8.27 g. What is the molecular formula for the compound
What would the peak wavelength of blackbody emission from the early time signal detected in the pulsed LIBS experiment? Use Wien's Law which can be derived by differentiating the Planck distribution.
Write molecular, total ionic, and net ionic equations for the reaction of AgNO3 and NaCl (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.)
In an adiabatic compression if one mole of an ideal gas with a Cv=5R/2, the temperature rises from 293 K to 325 K. Calculate the heat, work, change in enthalpy and change in internal energy
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