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Damm [24]
3 years ago
15

A chemical equation is balanced by changing or adding

Chemistry
1 answer:
tresset_1 [31]3 years ago
6 0
<span>A chemical equation is balanced by changing or adding C. numbers in front of molecules, which are called coefficients. 
For example:
O2 + 2 H2 ---> 2 H2O (number 2 is added to both sides in order to balance the equation)</span>
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