In the treatment of domestic water supplies, chlorine is added to the water to form chloric(i) acid, hclo.

cl2(aq) + h2o(i) → h+(aq) + cl–(aq) + hclo(aq)

the hclo reacts further to give the chlorate(i) ion.(clo-)

hclo(aq) + h2o(i) → h3o+(aq) + clo–(aq)

both hclo and clo–kill bacteria by oxidation.

what is the change in oxidation number of chlorine in forming the chlorate(i) ion from the aqueous chlorine?

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Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.

What reaction is taking place? 02 + c3h8 = h20 + co2