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An unknown metal hypochlorite salt, M(ClO)2, is subjected to analysis by iodometric titration: the salt is dissolved in dilute sulfuric acid, treated with excess aqueous KI, and then titrated with Na2S2O2 in the same manner as in your experiment. The unknown metal ion (M^2+) is completely uncreative in the titration. However, all of the hypochlorite ion bonded to the metal reacts completely with Na2S2O2. Iodometric titration of an acidified 0.0499 g sample of M(ClO)2 required 28.42 ml of 0.05521 mol/L Na2S2O2 to reach the equivalence point. What it the identity of metal M?
Assume the density of the vinegar solution is 1.00 g/mL and 3.5 % by mass acetic acid.
Calculate the number of grams of HC2H3O2 needed to make 450 mL of 0.322 M solution.
If 10.0 mL of .300 M KOH are required to neautralize 30.0 mL of gastric juice (HCl), what is the molarity of the gastric juice?
Considering the electron configuration of aluminum, 1s2s^22p^63s^23p^1, which of the following represents the valence electrons only:
A 23.1 g sample of pure iron at 95°C is dropped into 78 g of water at 17°C. What is the final temperature of the water-iron mixture?
Also, give an estimate the pl of this tetrapeptide (you may assume the pKa of any acidic R group is 4, the pKa of any basic R group is 11.5, and the pKa of the alpha-COOH is 2, and the alpha-NH3 is 9.5).
Consider the following reaction: 2Mg + O2 --> 2MgO , Rate = k[Mg][O2]^2 Part A What is the overall reaction order? Express your answer as an integer. Part B What are the units of the rate constant k for this reaction?
Ammonia is used for refrigeration. the heat of vaporization of ammonia is 23.35kJ/,mol. How many grams of ammonia would have tovaporize toofreeze one tray of ice cubes
Compute the boiling point elevation of a salt water solution that contains 5.90 g of NaCl dissolved in 109 ml of water. Enter the number of degrees celsius that the boiling point will be elevated.
The equilibrium constant for the elctrochemical reaction 2Fe+Cu3(PO4)2 = 2FePO4 + 3Cu occuring in aqueous solution
A compound with empirical formula C 2 H 2 N dissolved its 0.0800 gram in 10.00 g of C 6 H 6 , freezing point of resulting solution= 4.99 degree celsius
A 1.90 g sample of a large boimolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule
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