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在化学反应中,生成物从无质量到有质量逐渐增多,反应物的质量逐渐减少,参加反应的各物质的质量总和与生成物的各物质的质量总和相等。
In a chemical reaction, the product gradually increases in mass from non-mass to mass, and the mass of the reactant gradually decreases, and the sum of the mass of each substance participating in the reaction is equal to the total mass of each substance in the product.