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
