How do you balance the following equation: $Ca + O_2 -> CaO$ ?

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Answer 1 · 2017-04-10T03:31:16

$Ca+1/2O_2rarrCaO$

Make sure there's the same number of atoms on each side of the equation,

On the left side there are $2$ $O$ atoms and only $1$ $O$ atom on the right.

Therefore,

$Ca+1/2O_2rarrCaO$

This is the balanced reaction (it's ok to have fractions as the coefficient).

How do you balance the following equation: Ca + O_2 -> CaOCa + O_2 -> CaO?