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Answered

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Which is the properly balanced equation for the process in which iron oxide (Fe2O3) and carbon monoxide (CO) react to produce iron (Fe) and carbon dioxide (CO2) gas?

A.
Fe2O3 + CO → Fe + CO2

B.
Fe2O3 + 3CO → 2Fe + 3CO2

C.
2Fe2O3 + 3CO → 2Fe + 3CO2

D.
3Fe2O3 + CO → 3Fe + 2CO2

Sagot :

libby102
B. Fe2O3 +3CO --> 2Fe + 3CO2 

Fe has 2, Fe2 ---> 2Fe
O has 6, O3 + 3O (3+3=6) ---> 3(O2)(3x2=6) 
C has 3, (3C --> 3C) 

none of the other equations make sense:
In A, Fe on the left has 2 while Fe on the right has 1(so you can eliminate that.)
in C, Fe on the left has 4 (2x2) while Fe on the right has 2.(eliminate this too.)
in D, Fe on the left has 6 (3x2) and Fe on the right has 3 (eliminate this)
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