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Calculate the pH of a buffer solution that contains 0.25 M benzoic acid C6H5CO2H and 0.15 M sodium benzoate C6H5CO2Na. For benzoic acid, Ka = 6.5 x 10-5.
What is the value of Kc for the reaction at the temperature of the reaction Mixture. N2(g)+O2(g) 2 NO(g)
The pH of coffee is approximately 5.0. How many times greater is the [H3O+] in coffee than in tap water having a pH of 8.0
A sample containing 1.5 moles of neon gas has a volume of 8.00 L. What is the new volume of the gas in liters when the following changes occur in the quantity of the gas at constant pressure and temperature.
Sketch a qualitative MO diagram for [Ni(NH3)6]2+ and identify the portion of the diagram considered by crystal-field theory. Imagine the ammonia ligands were all exchanged with a ?-donor ligand.
What is the mass (in g) of a cube of aluminum (density = 2.702 g/mL) with an edge length of 0.27 feet
For each of the following experimental or calculations errors, tell of the calculated value of R, writte if would be too high, too low or unchanged.
What volume of carbon dioxide (CO2) will be produced if 2.90 moles of iron (Fe) is produced?
What is the mass percent of sodium flouride solution prepared by dissolving 0.64moles of sodium fluoride into 63.5 grams of water?
The molar mass of compound is measured to be 33.4, 35.2, 34.1, 33.9 g/mol in four trials. What is the avg molar mass & calculate standard deviation and %RSD for determination of the molar mass
Calculate the partial pressure of each gas in the container. Express the pressure values numerically in atmospheres, separated by commas. Enter the partial pressure of methane first, then ethane, then propane.
One sample had a mass of 25 grams. The other had a mass of 50 grams. Would the same number of particles be ejected from each sample in the first hour?
If there is .327g of an unknown metal and it reacts with 10 mL of 1.00 M of HCl, what is the molar mass of the unknown metal
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