Question

Balance the equation. Mg3(PO4)2+? C → ? Mg3P2+? CO , using the smallest possible integers. What is the sum of the coefficients in the balanced equation?1. 14.
2. 16.
3. 12.
4. 18.
5. 22.

Answer 1

Answer:

Sum of coefficients in balanced equation is 18

Explanation:

Unbalanced equation: $Mg_{3}(PO_{4})_{2}+C\rightarrow Mg_{3}P_{2}+CO$

Balance O: $Mg_{3}(PO_{4})_{2}+C\rightarrow Mg_{3}P_{2}+8CO$

Balance C: $Mg_{3}(PO_{4})_{2}+8C\rightarrow Mg_{3}P_{2}+8CO$

Balanced equation:$Mg_{3}(PO_{4})_{2}+8C\rightarrow Mg_{3}P_{2}+8CO$

Sum of coefficients in balanced equation = (1+8+1+8) = 18

So, option (4) is correct.