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at the end of a chemical reaction, what is the total mass of the reactants compared to the total mass of the products?
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at the end of a chemical reaction, what is the total mass of the reactants compared to the total mass of the products?

User Engineerchuan
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According to the law of conservation of mass, the total mass of the reactants is equal to the total mass of the products.
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User David Ross
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According to the law of conversation of mass, mass cannot be created nor destroyed in a chemical reaction. Therefore, the mass will not change between the reactants and the products. 
User Nktoronto
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