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Question: You would like to prepare a buffer solution using acetic acid and sodium acetate. You take a 15.00 mL aliquot of a 0.175 M acetic acid solution and a 30.00 mL aliquot of a 0.145 M sodium acetate solution and dilute to 100.00 mL. What is the pH of the resulting buffer?
Consider the halide ions as nucleophiles. Briefly explain why F-, the strongest base among the halide ions, is the best nucleophile in polar aprotic solvents while iodide the weakest base
a helium-filled balloon has a volume of 2.75 l at 17 c. the volume of the balloon decreases to 2.36 l after it is
What is the pH at the point during a titration when 34 mL of 0.200 M HCl has been added to 33 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3.
Determine the percent by mass of all elements in the compound sodium carbonate decahydrate better known as washing soda
For example, sulfur undergoes a phase change from the rhombic crystal structure to the monoclinic form at 95.3 °C. Assuming that ?H for this phase change is 0.358 kJ/mol, calculate ?S for this phase change.
Suppose 532 mL of neon gas at 20C and 1.04 atmospheres and 376 mL of SF6 gas at 20C and 0.97 atmospheres are put into a 275-mL flask. If the temperature remains constant, calculate the partial pressure, in atmospheres, of the SF6 gas in the mixtur..
A scuba diver with a lung capacity of 5.3L inhales a lungful of air at a depth of 47m and a pressure of 5.7atm.
Determine KM for glucose oxidase. KM = M. B. Determine effect on the maximal rate if the concentration of adenine is 0.001 M. Vmax,I = mmol/min.
Determines the rate constant for this reaction and express and determine how many mL of a 0.157M solution of KOH is required to react with 0.385g of CH 3 COOH?
The temperature of the water rose from 25.00 degree C to 28.21 degree C. Assuming all the heat from the metal was transferred to the water, calculate the specific heat of the metal.
how can their efficiency be less than 100 and the law of conservation of energy still be valid? 9. an incandescent
Potassium chloride, KCl, sodium sulfate, Na2SO4, glucose, C6H12O6, carbon dioxide, CO2, and ammonium phosphate, (NH4)3PO4, are soluble in water
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