What is the volume of a balloon if it contains 3.2 moles of helium answer?

the answer is learned

i'm assuming that it's c.) red bank..

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.