2A1 + 6HCI - 2AlCl3 + 3H2
If 3.00 grams of H2 were produced, how many grams of Al
reacted? (Molar mass of Al = 26.98 g/mol, molar mass of H2 =
2.016 g/mol)

sup bro, im dumb, but this is what i found xd

"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"

it is thermal conduction according to apex : )