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When the following equation is balanced, H2S + Fe(OH)3 ----> Fe2S3 + H2O the coefficient of H2S is
What is the half-life of a compound if 63 percent of a given sample of the compound decomposes in 72 min? Assume first-order kinetics.
Is the reaction spontaneous?
what happens when acetate ion reacts with mercuric chcloride? explain with reactions?
Ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. From 164.5 degrees C to 179 degrees C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction
A medical patient has the ball section of his femur replaced with a titanium implant. Assuming the implant is a perfect sphere with a radius of 1.5 inches
the osmotic pressure of this solution was 0.00222 atm at 25 C. calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte.
2 liquids, A and B, have the same molecular weight. Samples of each are placed on temperature probes and allowed to evaporate. After a period of time Liquid A had a change in temp
Dissolving 3.00 g of an impure sample of CaCO3 in an excess of HCl acid produced .656 L of CO2 (measured at 20 degrees C and 792 mmHg). calculate the percent by mass of calcium carbonate in the sample. State any assumptions.
How many milliliters of 6 M HNO3 would you add to 300 mL of the buffers solution to change the pH from 5.09 to 5.03?
How many liters of F2 at STP could be liberated from the electrolysis of molten NaF under a 2.16 ampere current
the experiment is then repeated with the copper immersed in a stream of water that maintains its temp at 293. Calculate the change in entropy of the copper and the water in this case.
With respect to the corrosion of steel in concrete, explain the significance of the following terms: carbonation of concrete, passivity of steel, electrical resistivity of concrete, state of oxidation of iron.
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