Which element or elements are unbalanced in this equation?
Fe2O3 + 3 CO → Fe + 3 CO2
Responses
Only the O is unbalanced.
Only the , upper case O, is unbalanced.
C and O are both unbalanced
upper case C, and , upper case O, are both unbalanced
Only the Fe is unbalanced.
Only the , upper case F lower case e, is unbalanced.
Fe and O are both unbalanced.