W(Na) = Ar(Na) * n / Mr(Na2SO4) *100% = 23 * 2 / 142 *100% = 32,4%
W(S) = Ar(S) * n / Mr(Na2SO4) *100% = 32 * 1 / 142 *100% = 22,53 %
W(O) = Ar(O) * n / Mr(Na2SO4) *100% = 16 * 4 / 142 *100% = 45,07%
W(Na) = Ar(Na) * n / Mr(Na2SO4) *100% = 23 * 2 / 142 *100% = 32,4%
W(S) = Ar(S) * n / Mr(Na2SO4) *100% = 32 * 1 / 142 *100% = 22,53 %
W(O) = Ar(O) * n / Mr(Na2SO4) *100% = 16 * 4 / 142 *100% = 45,07%