प्रभाव एवं सत्ता की परिभाषा कीजिए। दोनों के परस्पर संबंध की व्याख्या कीजिए।
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chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side. ... The first chemical equation was diagrammed by Jean Beguin in 1615.
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