Determine the amount of heat that will be generated when 360.85 g of pentane [C5H12] are burned. For pentane: ΔHcomb = – 3535 kJ/mol.

the answer is learned

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.

i think it's letter a.