sorry i dont know who Al is
It depends on the equation.
3
The valence of zinc is 2+.
4K + O2 = 2K2O so the "coefficient" is 1
Al(NO3)3, so aluminium has coefficient of one. Aluminium is always Al3+ in ionic compounds.
It depends on the equation.
3
3
1
2
The valence of zinc is 2+.
4K + O2 = 2K2O so the "coefficient" is 1
The coefficient for Ni NO3 3 is four.
The coefficient for Ni NO3 3 is four.
Al(NO3)3, so aluminium has coefficient of one. Aluminium is always Al3+ in ionic compounds.
The coefficient for oxygen is 1, and so is not written. The equation is already balanced.
6