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if you throw a heavy log into the fireplace, after it burns you are left with some ash. the ash has a mass much less then the mass of the original log. this seems to go against the law of conservation
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if you throw a heavy log into the fireplace, after it burns you are left with some ash. the ash has a mass much less then the mass of the original log. this seems to go against the law of conservation of mass. please explain what we are forgetting.

User Eric Bachhuber
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Answer: ?

Step-by-step explanation:

User Clstrfsck
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