Объяснение:
Mr(Li2S2O3) = 7*2 + 32*2 + 16*3 = 126
W(Li) = Ar(Li) *n / Mr(Li2S2O3) *100% = 7*2 / 126 *100% = 11%
W(S) = Ar(S) *n / Mr(Li2S2O3) *100% = 32*2 / 126 *100% = 51%
W(O) = Ar(O) *n / Mr(Li2S2O3) *100% = 16*3 / 126 *100% = 38%
Объяснение:
Mr(Li2S2O3) = 7*2 + 32*2 + 16*3 = 126
W(Li) = Ar(Li) *n / Mr(Li2S2O3) *100% = 7*2 / 126 *100% = 11%
W(S) = Ar(S) *n / Mr(Li2S2O3) *100% = 32*2 / 126 *100% = 51%
W(O) = Ar(O) *n / Mr(Li2S2O3) *100% = 16*3 / 126 *100% = 38%