When is a chemical reaction is said to be done???
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When two substances react to make a new substance.
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Answer:
as per your question ,
Explanation:
yeah , the reactions are said to be done when they react together to form or become a new substance
like , { h = hydrogen and n = nitrogen }
3h^2 + n^ 2 = 2nh^ 3 is chemical reaction in formula
but , everyday we see chemical reactions
like , rusting of iron
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