Explanation:
2NaN3 => 2Na + N2
There are 6 nitrogen atoms on the left side but only 2 nitrogen atoms on the right side.
The equation would be balanced if there was a "3" infront of N2.
Answer:
When you fill in 2 reactants, you will have 6 N atoms but on the side of the product there are only 2 N atoms, so the equation cannot be balanced and for the equation to be equal, you need to fill 3 into the part N2 to have 6 N atoms
Explanation:
