Applied Chemistry An Elementary Text book for Secondary Schools

Fredus Nelson Peters

The book Applied Chemistry An Elementary Text book for Secondary Schools was written by author Fredus Nelson Peters Here you can read free online of Applied Chemistry An Elementary Text book for Secondary Schools book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Applied Chemistry An Elementary Text book for Secondary Schools a good or bad book?

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Give some uses for the nitrates of strontium and barium. Why are they so used?
17. Name some other compounds of barium and strontium that are of some use.
18. Complete these equations, using amounts needed, Ba(HO) 2 SrC0 3 + HN0 3 ->, Sr(N0 3 ) 2 -t-NH, HO CHAPTER XXVIII HARD WATERS METHODS OF SOFTENING Outline Kinds of Hard Waters Effects of Hard Waters Treatment for Hardness (a) In the Home (6) For Commercial Enterprises Effects of Coagulants upon City Supplies Hardness as Belated to Soap Met...hod of Estimating Hardness 1. Kinds of Hardness. Any water containing mineral matter in solution which will cause a precipitate with a soap solution is said to be hard. The soap solution must be perfectly clear: when added, the formation even of a slight cloudy appearance shows that the water is distinctly hard. More often hardness is caused by the presence of calcium or magnesium salts, but occasionally by iron. When the hardness is such that boiling will re- move it, it is said to be temporary; otherwise it is perma- nent hardness.

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