Объяснение:
Mr(MgBr2) = 24 + 80*2 = 184
W(Mg) = Ar(Mg) *n / Mr(MgBr2) *100% = 24*1 / 184 *100% = 13%
W(Br)=Ar(Br) *n / Mr(MgBr2) *100% = 80*2 / 184 *100% = 87%
Объяснение:
Mr(MgBr2) = 24 + 80*2 = 184
W(Mg) = Ar(Mg) *n / Mr(MgBr2) *100% = 24*1 / 184 *100% = 13%
W(Br)=Ar(Br) *n / Mr(MgBr2) *100% = 80*2 / 184 *100% = 87%