1.Magnesium reacts with nitrigen to produce magnesium nitride.
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2.Hydrogen peroxide must be kept in an opaque container because when it is exposed to light, ut decomposes to form water and oxygen
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3.Silver (I) nitrate reacts with copper to form copper (II) nitrate and silver
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4.Propane + oxygen gas ----> carbon dioxide gas + water vapor
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5.Sodium carbonate + barium nitrate ----> sodium nitrate + barium carbonate
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