During an experiment, you weigh the mass of a piece of wood as 200 grams. You burn it so that the smoke released can turn a small turbine above the
burning wood. Afterwards, you weigh the mass of the ashes as 90 grams.
Why has your experiment not broken the Law of Conservation of Mass?
A. The Law of Conservation of Mass does not apply to combustion reactions.
B. The missing mass was released in the smoke, which was not weighed, making it seem
like there is less mass in the products than the reactants.
C. All of the missing mass has been converted into heat energy. It doesn't affect the Law of
Conservation of Mass because it uses Einstein's law E = MC2 instead.
D. Some of the total energy of the reaction was used to turn the turbine, so there should be
less mass overall in the products of the reaction.
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