Объяснение:
Mr(Mg3N2) = 24*3 + 14*2 =100
W(Mg) = Ar(Mg) *n / Mr(Mg3N2) *100% = 24*3 / 100 *100% =72%
W(N) = Ar(N) *n / Mr(Mg3N2) *100% = 14*2 / 100 *100% = 28%
Объяснение:
Mr(Mg3N2) = 24*3 + 14*2 =100
W(Mg) = Ar(Mg) *n / Mr(Mg3N2) *100% = 24*3 / 100 *100% =72%
W(N) = Ar(N) *n / Mr(Mg3N2) *100% = 14*2 / 100 *100% = 28%