balance the equations (single displacement)

1. zinc + Iron(II) Chlorine ---->
2. Zinc + Hydrogen Chlorine ---->

To balance the given chemical equations, we need to ensure that the number of atoms of each element on both sides of the equation is the same. Let's balance each equation step by step:

1. zinc + Iron(II) Chlorine ---->

The unbalanced equation is:
Zn + FeCl2 ---->

First, we need to balance the chlorine atoms. Since there is one chlorine atom on the right side of the equation, we need to find a coefficient that will balance the chlorine atoms on the left side. To achieve this, we'll put a coefficient of 2 in front of FeCl2:

Zn + 2FeCl2 ---->

Next, we need to balance the iron and zinc atoms. There is one iron atom on the right side and two on the left side, so we'll put a coefficient of 2 in front of FeCl2:

Zn + 2FeCl2 ----> 2Fe + ZnCl2

Now the equation is balanced with two iron atoms and two chlorine atoms on each side, as well as one zinc atom on each side.

2. Zinc + Hydrogen Chlorine ---->

The unbalanced equation is:
Zn + HCl ---->

First, let's balance the chlorine atoms. Since there is one chlorine atom on the right side of the equation, we need to find a coefficient that balances it on the left side. We'll put a coefficient of 2 in front of HCl:

Zn + 2HCl ---->

Next, let's balance the hydrogen atoms. There are two hydrogen atoms on the right side and only one on the left side. To balance it, we'll put a coefficient of 2 in front of Zn:

2Zn + 2HCl ---->

Now the equation is balanced with two zinc atoms, two hydrogen atoms, and two chlorine atoms on each side.