Zelma Casebier: This is done in Landolt's Tube. It is a H-Shaped tube or you can say two test tubes connected with each other by a tube in the middle. One of the test tube contains the one of the reactants and the other contains the other reactant. The reaction is carried out in it by shaking the Landolt's tube.The weight of the tube is measured before and after reaction. This when comes equal, proves conservation of mass....Show more
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