The earth's ozone layer is being attacked in part by the released chlorine when ultraviolet radiation breaks down certain fluorocarbons. consider yourselves three fluorocarbons known as cfc-11 (ccl3f), cfc-12 (ccl2f2), and hcfc-22 (chf2cl).
a.calculate the percentage by weight of chlorine in each of these fluorocarbons.
b.if each kilogram of cfc-11 could be replaced by 1 kg of hcfc-22, by what total percentage would the mass of chlorine emissions be reduced?