What is this equation balanced?

2Al + 6HCl —> 3H₂ + 2AlCl₃

Explanation:

From the question given above:

Al + HCl —> H₂ + AlCl₃

The above equation can be balance as illustrated below:

Al + HCl —> H₂ + AlCl₃

We have 1 atom of Cl on the left side and 3 atoms on the right side. It can be balance by putting 6 in front of HCl and 2 in front of AlCl₃ as shown below:

Al + 6HCl —> H₂ + 2AlCl₃

We have 6 atoms of H on the left side and 2 atoms on the right side. It can be balance by 3 in front of H₂ as shown below:

Al + 6HCl —> 3H₂ + 2AlCl₃

We have 1 atom of Al on the left side and 2 atoms on the right side. It can be balance by putting 2 in front of Al as shown below:

2Al + 6HCl —> 3H₂ + 2AlCl₃

Thus, the equation is balanced.

c.

explanation:

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.