Tell me why you're having a problem answering this question. To be balanced, you must have the same number of an element on each side of the equation. Just count. For example,
C) CH4 + Cl2 --> CCL4 + HCl
1 C on the left and 1 on the right. OK. 4 H on the left and 1 on the right. not balanced. 2 Cl on the left and 5 on the right. not balanced.
D) Fe2O3 + C --> Fe + CO2
2 Fe on the left and 1 on the right. not balanced. 3 O on the left and 2 on the right. not balanced. C is balanced.
To be balanced you must have EACH element the same on left and right. If any ONE element is not balanced then the entire equation is not balanced.
Which equation is balanced?
A) N23H2 + H2 --> 2NH4
B) AgI + Na2s --> Ag2S + 2NaI
C) CH4 + Cl2 --> CCL4 + HCl
D) Fe2O3 + C --> Fe + CO2
2 answers
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