Respuesta :

Answer:

7

Explanation:

The balanced reaction is as follows:

[tex]2CO+2NO \rightarrow 2CO_2 + N_2[/tex]

Coefficient of CO = 2

Coefficient of NO = 2

Coefficient of CO2 = 2

Coefficient of N2 = 1

Sum of all coefficient = 2 + 2+ 2+ 1

                                    = 7

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