Question

!!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 ______.

Answer 1

Answer:

10.

Explanation:

Hello,

In this case, for the given reaction:

$Cr + Fe(NO_3)_2 \rightarrow Fe + Cr(NO_3)_3$

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

$2Cr + 3Fe(NO_3)_2 \rightarrow 3Fe + 2Cr(NO_3)_3$

So the sum of all the coefficients is 10.

Regards.