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#Post#: 980--------------------------------------------------
Chemistry
By: Precious favour Date: November 23, 2013, 7:41 am
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Let see some nature study today topic is "WATER"
water z divided in to 2 namely 1. natural and 2. Treated water.
Natural water are water dat occur naturally. D purrest of it is
d rain water. While stream water contains mineral salts. Treated
water are water dat are prepared 4 special purposes eg.
Distilled water , chlorinated water etc...
Various of ways are used to treat water ...coagulation,
sedimentation, aeration, filteration etc.
Hard water is water dat dos not lather readily wit soap and
caused by presence of calcium hydrogen tetraoxosulphate<iv> ,
magnesium and calcium ions. My name is master, hacker,
webmaster....samuel solomon. More yet to come. In
Nadcoprative.com
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