Объяснение:
Mr(CuS) = 64 + 32 = 96
W(S) = Ar(S) *n / Mr(CuS) *100% = 32*1 / 96 *100% =33%
Mr(Na2SO4) = 23*2 + 32 + 16*4 = 142
W(S) = Ar(S) *n / Mr(Na2SO4) *100% = 32*1 / 142 *100% =22,5%
Mr(SO2) = 32 + 16*2 = 64
W(S) = Ar(S) *n / Mr(SO2) *100% = 32*1 / 64 *100% =50%
Объяснение:
Mr(CuS) = 64 + 32 = 96
W(S) = Ar(S) *n / Mr(CuS) *100% = 32*1 / 96 *100% =33%
Mr(Na2SO4) = 23*2 + 32 + 16*4 = 142
W(S) = Ar(S) *n / Mr(Na2SO4) *100% = 32*1 / 142 *100% =22,5%
Mr(SO2) = 32 + 16*2 = 64
W(S) = Ar(S) *n / Mr(SO2) *100% = 32*1 / 64 *100% =50%