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Use the values of Ka1 = 0.056 and Ka2 = 5.4 x 10-5 to calculate the [OH-] in a 0.387 M solution of oxalic acid (H2C2O4). Use E notation and 3 significant figures.
A 3.84-mole sample of a gas is held at a temperature of 297 K and a pressure of 286 atm. Determine the volume of the gas sample.
What mass of chromium(III) oxide would be needed in order to obtain 850 grams of chromium metal
In an electrolysis cell similar to the one employed in this experiment, a student observed that his unknown metal anode lost 0.238 g while a total volume of 84.90 mL of H2 was being produced.
Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.50 mL Ti solution of unknown concentration with 2.00 mL of a 10.5 micrograms/mL solution of Co
Ethanol is a possible fuel. Use average bond energies to calculate delta Hrxn for the combustion of ethanol.
Phosphorus pentachloride is used in the industrial preparation of organic phosphorus compounds. Equation 1 shows its preparation from PCl3 and Cl2.
What is the theoretical yeild of sodium carbonate for the equation: 2NaHCO3(s)--> Na2CO3(aq) + H2O(g) + CO2(g)
Chlorine forms a number of oxides with the following oxidation numbers: +1,+3,+4,+6 &+7.Write formula for each of these compounds.
What is the PH change of a 0.270M solution of Citric Acid (pKa = 4.77) if citrate is added to a concentration of 0.145M with no change in volume?
A hypothetical metal has a face-centered cubic unit cell with the edge length of 4.566 Å. Calculate the radius of the metal atom.
The atmospheric pressure 4.The volume for the vapor to occupy above the liquid 5.The temperature of the liquid
Sucrose decomposes in acid solution into glucose and fructose according to first-order rate law, with a half-life of 3.33 hr at 25 degrees Celsius. What fraction of the sample remains after 9.00hr
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