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Question- A 2.580 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution. To this solution was added 1.980 grams of KI and 50.00 mL of a 0.00905 M KIO3 solution. The excess I3- was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
Please demonstrate the entire work. I am thanking you in advance
A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 11.12% naphthalene by mass. Calculate the vapor pressure at 25?C of hexane above the solution. The vapor pressure of pure hexane at 25?C is 151 torr.
Calculate the mass of solid needed to make a 500ml solution that is 0.25m in sulfate anion, using sodium sulfate decahydrate. I came up with 17.75g.
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Compute the number of electrons in a flake of pure gold valued at $0.32. Assume that the price of gold is $1219.0/troy oz.
Would a reaction occur if a piece of Sn metal were placed in a ZnSO4 solution. if so write a net ionic equation
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