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In a chemical reaction, energy can be A. released. B. absorbed. C. released or absorbed. D. neither released nor absorbed.
. C. released or absorbed
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User: In a chemical reaction, energy can be A. released. B. absorbed. C. released or absorbed. D. neither released nor absorbed.

Weegy: . C. released or absorbed
Neon Aloo|Points 475|

User: 2MgO à 2Mg + O2 is an example of a _________ chemical reaction. A. synthesis B. combustion C. replacement D. decomposition





Weegy: 2MgO à 2Mg + O2 is an example of B. combustion.
Expert answered|sharpies|Points 4958|

User: C3H8 + 5O2à 3CO2 + 4H2O is an example of a _________ chemical reaction. A. synthesis B. combustion C. replacement D. synthesis and combustion E. synthesis and replacement

Weegy: C3H8 + 5O2à 3CO2 + 4H2O is an example of a B. combustion. Also I want to change that first question 2MgO à 2Mg + O2 is D. decomposition!(this is the correct answer, I typed in the wrong one)
Expert answered|sharpies|Points 4958|

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Asked 11/15/2011 2:02:07 PM
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