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(i) State the law which is followed in b...

(i) State the law which is followed in balancing a chemical equation .
(ii) Balance the following chemical equation:
`Fe+H_(2)Orarr Fe_(3)O_(4)+H_(2)`

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(i) Mass can neither be created nor destroyed in a chemical reaction-Law of conservation of mass.
(ii) `3Fe+4H_(2)Orarr Fe_(3)O_(4)+4H_(2)`
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(a) List any three observations which determine that a chemical reaction has taken place . Also list three informations that cannot be obtained about a chemical reaction, merely by its chemical equation. (b) Balance the following chemical equations. (i) Fe+H_(2)OrarrFe_(3)O_(4)+H_(2) (ii) CO_(2)+H_(2)O rarr C_(6)H_(12)O_(6)+O_(2)

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