write the chemical equation for the following reaction (a) a piece of calcium metal is dropped in water (b) stream is passed over red hotion
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Ca+H2O->Ca(OH) 2
3Fe+4H2O->Fe3O4+H2
3Fe+4H2O->Fe3O4+H2
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a) ca + 2H2o gives ca (oh)2 + h2
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