Which has more mass: a lump of coal (assumed to be 100% carbon) or the carbon dioxide gas formed from burning the lump of coal?
A) The lump of coal because it is a solid.
B) The lump of coal because gases have little mass.
C) The carbon dioxide gas because it occupies a much larger volume.
D) The carbon dioxide gas because it includes oxygen that was added from the air.
E) Both weigh the same because mass is conserved.
Correct Answer:
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