Объяснение:
Mr(MgO) = 24 + 16 = 40
W(Mg)= Ar(Mg) *n / Mr(MgO) *100% = 24 *1 / 40 *100% =60%
W(O) = Ar(O) *n / Mr(MgO) *100% = 16*1 / 40 *100% = 40%
Mr(MgCO3) = 24 + 12 + 16*3 =84
W(Mg) = Ar(Mg) *n / Mr(MgCO3) *100% = 24 *1 / 84 *100% =29%
W(C) = Ar(C) *n / Mr(MgCO3) *100% = 12*1 / 84 *100% = 14%
W(O) = Ar(O) *n / Mr(MgCO3) *100% = 16*3 / 84 *100% =57%
Объяснение:
Mr(MgO) = 24 + 16 = 40
W(Mg)= Ar(Mg) *n / Mr(MgO) *100% = 24 *1 / 40 *100% =60%
W(O) = Ar(O) *n / Mr(MgO) *100% = 16*1 / 40 *100% = 40%
Mr(MgCO3) = 24 + 12 + 16*3 =84
W(Mg) = Ar(Mg) *n / Mr(MgCO3) *100% = 24 *1 / 84 *100% =29%
W(C) = Ar(C) *n / Mr(MgCO3) *100% = 12*1 / 84 *100% = 14%
W(O) = Ar(O) *n / Mr(MgCO3) *100% = 16*3 / 84 *100% =57%