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3 baking soda is placed in a balloon. the balloon is then wrapped around the mouth of a flask that contains
vinegar. next, the flask is put on a balance. the baking soda is mixed with the vinegar and produces a gas
that causes the balloon to expand. the reading on the balance does not change. the diagram below shows
this experiment.
which conclusion is best supported by this experiment?
a gases do not have mass.
b gases are less dense than liquids.
c there is no change in mass during a chemical reaction.
d the reactants do not change during a chemical reaction