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posted by jennifer on Sunday, August 9, 2009 at 10:28am.

A Compound Containing 3 Atoms Of Carbon And 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The Two End Products Of This Equation Are Carbon Dioxide And Water. What Element Should You Look At First In Balancing This Equation?

C3H8 + n O2 -> 3CO2 + 4H2O is the reaction. That results from the number of H and C atoms in the C3H8, and the products they tell you exist. To balance it, use the fact that 2n = 10 which is based upon the number of O atoms in the reaction.

Carbon

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