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When 0.050 mol of propionic acid, C2H5CO2H, is dissolved in 300 ml of water, the equilibrium concentration of H3O+ ions is measured to be 1.37 x 10-3 M. What is Ka for this acid?When 0.050 mol of propionic acid, C2H5CO2H, is dissolved in 300 ml of water, the equilibrium concentration of H3O+ ions is measured to be 1.37 x 10-3 M. What is Ka for this acid?
Estimate the pH at the equivalence point of an HOAc solution if 25.5 mL of this solution required 37.5 mL of 0.175 M NaOH to reach the equivalence point (Ka = 1.8 x 10-5).
If each of the following gas samples have the same temperature and pressure, which sample has the greatest volume? A) 1 gram of O2 B) 1 gram of Ar C) 1 gram of H2 D) all have the same volume E) not enough information
Using the standard values for the fundamental charge and the mass of the proton and neutron, what is the charge to mass ratio of the 5He nucleus, in Coulombs per gram?
Multiple choice questions in Nuclear chemistry - As the temperature of a sample of a radioactive element decreases, the half-life will
Zinc metal reacts with hydrochloric acid according to the following equation: Zn + 2HCl --> ZnCl2 + H2. How many grams of hydrogen gas can be obtained if 50.0 g of zinc react completely?
Calculate the mass percent of a solution that is prepared by adding 61.3g of NaOH to 492g of H2O
How many grams of oxygen reacted with the phosphorus?
What mass of liquid water remains in the flask when equilibrium is established? The equilibrium vapor pressure of water at 55 °C is 118 mm Hg.
For a reaction of hydrogen with iodine, the rate constant is 2.45*10^-4 L mol-1 s-1 at 302 C and 0.950 L Mol-1 s-1 at 508 C.
An open tubular chromatography column is 31.8 m long and has an inner diameter of 0.528 mm. The inside wall is coated with a layer of stationary phase 3.2 ?m thick. Unretained solute passes through the column in 2.23 min, while a certain solute ha..
What is the solute and solvent of Antifreeze? What is the solute and solvent of Pepsi? What is the solute and solvent of Sterling Silver?
How many milliliters of the potassium permanganate solution will be required to react completely with the potassium iodide solution if the reaction is carried out in acidic solution and in basic solution?
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