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

Sum of coefficients in balanced equation is 18

Step-by-step 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.