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The ashes left after the woods burns have less mass than the wood had . which statement explains what happened to the rest of the wood's mass.

a. it was lost as heat
b. it is in gases in the air
c. it is still in the wood
d it is in the ashes, but its energy can not be measured as mass.

  • science -

    I believe it is "a" however I could be wrong.

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