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A buffer solution contains acetic acid (HC2H3O2) at a concentration of 1.15 M and sodium acetate (NaC2H3O2) at a concentration of 2.05 * 10 to -2 M. The value of Ka for acetic acid is 1.75 * 10 to -5. Calculate the pH of this solution using the Henderson-Hasslebach equation.
Write an equation that represents the reaction of 2% ethanolic PBP solution with 4-methylcyclohexane, and name the product
Calculate the equilibrium concentrations of NH3 and H2S if a sample of solid NH4HS is placed in a closed vessel and decomposes until equilibrium is reached
The molecular weight of the protein is 3.4e4 grams per mole. What is the molar concentration of the protein?
C2H5OH(aq)+2Cr2O7^2-(aq)+16H+(aq)---> 2CO2(g)+4Cr^3+(aq)+11H2O(l) What is the blood alcohol level in mass percent if 8.26mL of 0.04988 M K2Cr2O7 is required for titration of a 10.005g sample of blood?
2.00 moles of a gas occupies 62.2 L at a par- ticular temperature and pressure. Its density is 0.900 g/L. What is the molar mass?
What are the subscripts in the empirical formula of this compound?
What is the pH of the solution that results from adding 30mL of 0.015M KOH to 50mL of 0.015M benzoic acid, Ka = 6.3 x 10^-5
How many grams of Na3PO4 will be needed to produce 425mL of a solution that has a concentration of Na+ ions of 1.10M ?
Find the vapor pressure of a solution that contains 218 g glucose in 460.0 mL of water at 30 degrees Celcius.
write a balanced equation for the reaction that takes place determine number of moles of KMnO4 used number of moles of iron
A fossil is found to have a 14C level of 75.0% compared to living organisms. How old is the fossil
Calculate the minimum number of grams of propane,C3H8 (g) , that must be combusted to provide the energy necessary to convert 3.15kg of ice at -15.5degC to liquid water at 75.5degC. C3H8 (g)
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