Which element or elements are unbalanced in this equation?

Fe2O3 + 3 CO → Fe + 3 CO2

Responses

C and O are both unbalanced
upper case C, and , upper case O, are both unbalanced

Fe and O are both unbalanced.
upper case F lower case e, and , upper case O, are both unbalanced.

Only the Fe is unbalanced.
Only the , upper case F lower case e, is unbalanced.

Only the O is unbalanced.

1 answer

C and O are both unbalanced

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