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!!Help!! The coefficients are missing from the skeleton equation: Cr + Fe(NO3)2 -> Fe + Cr(NO3)3. When balanced, the SUM of all the coefficients is ______.

Respuesta :

sebassandin

Answer:

10.

Explanation:

Hello,

In this case, for the given reaction:

[tex]Cr + Fe(NO_3)_2 \rightarrow Fe + Cr(NO_3)_3[/tex]

By knowing the law of conservation of mass must be respected, the following coefficients do balance the chemical equation:

[tex]2Cr + 3Fe(NO_3)_2 \rightarrow 3Fe + 2Cr(NO_3)_3[/tex]

So the sum of all the coefficients is 10.

Regards.