which of the following equations is balanced

label Physics
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schedule 1 Day
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H^2+o^2--------H^2o

H^2+o^2------H^2o+o^2

2H^2+o^2----2H^2o

4H^2+o^2-----H^2o+o

May 2nd, 2015

2H^2+o^2----2H^2o

Good luck 

May 2nd, 2015

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