Ok another chemistry question! This is another question that I can)t solve

Hey there!

NaHCO₃

Notice that there is no subscript under Na.

That means there is one atom of Na for each molecule of NaHCO₃.

Hope this helps!

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.

the answer is option a.