Balance the following equation: _Cr(s) + _Fe(NO3)2 (ag) → _Fe(s) + _Cr(NO3)3 (ag)​

To balance Cr + Fe(NO3)2 = Fe + Cr(NO3)3 you'll need to be sure to count all of atoms on each side of the chemical equation. Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Chromium + Iron (II) nitrate.

2Cr+3Fe(No3)2→ 3Fe+2Cr(No3)3

Explanation:

Important tips for balancing chemical equations: Only change the numbers in front of compounds (the coefficients). Never change the numbers after atoms (the subscripts). The number of each atom on both sides of the equation must be the same for the equation to be balanced.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.