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How many moles of NaOH must be added to 1.0 L of 3.0 M HC2H3O2 to produce a solution buffered at each pH?
a.) pH=pKa; 1.5 molb.) pH = 3.15 __ molc.) pH = 6.09; __ mol
Arrange the following elements in order of INCREASING atomic size AND explain how you know the order
1.5000 g of diprotic weak acid H2A was dissolved in 100.00 mL volumetric flask. 25.00 mL aliquots of this solution was titrated with a monoprotic strong base NaH (0.0800 M). The titre volume of NaOH was 40.00 mL. Calculate the molecular weight of ..
Describe an experiment that could prove that the ADH-catalyzed oxidation of ethanol to acetaldehyde is stereospecific.
When 5.00 g of fructose, C6H12O6, (FW 180.16 g/mol) is burned in a calorimeter whose heat capacity is 29.7 kJ/oK, the temperature increases by 2.635oK. Calculate the heat of combustion of fructose in kJ per mole.
Sodium methoxide reaction: Pipet 1.65 mL of a 25% (by weight) solution of sodium methoxide in methanol into a 10 mL reaction flask.
A mixture is at equilibrium at a temperature of 492 K and contains 0.997 M NH3 and 0.211 M H2. Determine the concentration of N2 at equilibrium if the Kc = 170. N2(g) + 3 H2(g) ? 2 NH3(g).
Nitrogen and Oxygen form an extensive series of oxides of general formual NxOy; at least 7 are known. One of them is a blue solid that comes apart reversibly in the gas phase. It contains 36.84% N and the rest is Oxygen. What is the empirical form..
Hydrochloric acid is added to zinc. How many mls of 0.500 M HCl are needed to react completely with 25.0 g of zinc metal
The rate law is : Rate = k [ I-]^a [ BrO3 -]^b [H+]^c Reaction time in run number 1 31 Reaction time in run number 2 31 Reaction time in run number 3 15 Reaction time in run number 4 15 Calculate the following The k in the rate law The activation ..
A diver at a depth of 100 ft (pressure approximately 3 atm) exhales a small bubble of air with a volume equal to 100 mL. What will be the volume of the bubble (assume the same amount of air) at the surface?
A gas is confined to a cylinder under constant atmospheric pressure. When 415 J of heat is added to the gas, it expands and does 106 J of work on the surroundings. What is the value of \Delta H for this process? What is the value of \Delta E for t..
What is the net redox reaction that occurs when Cu comes into contact with acidic K2Cr2O7? (b) What is the E cell for the reaction
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