Respuesta :

joseaaronlara

Answer:

The answer to your question is below

Explanation:

Law of conservation of mass:

                  mass of reactants  =  mass of products

             

Problem

   mass of beakers before mixing = mass of beakers after mixing

 

   Beaker A (128.71) + Beaker B (128.97) = Beaker A (154.1) + Beaker B (103.58)

                                        257.68 g = 257.68 g

Then the law of conservation of mass is true

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