Harry and Rebecca were doing an experiment in the laboratory. They measured the
mass of reactants as 50 g. After the reaction had completed, the mass of the products was 34 g. They noticed
that a gas was given off during the reaction so they wanted to find out the mass of this gas. Explain to Harry
and Rebecca how they could calculate this
it is because seee :- mass of reactants is always same as product so 50 = 50, if they found only 34g than the rest has gone out through the gas obviously so take it easy and just subtract the 34 from 50 :- 50-34 = 16