Mr(NO2) Mr(N2O5 Mr(CA NO3) Mr(MgO) Mr(Mg3 N2) Mr(MgCO) посчитайте ​

Mr[NO2] = Ar[N] + Ar[O] * 2 = 14. 0067 + 15. 9994 * 2 = 46. 0055

Mr[N2O5] = Ar[N] * 2 + Ar[O] * 5 = 14. 0067 * 2 + 15. 9994 * 5 = 108. 0104

Mr[Ca(NO3)2] = Ar[Ca] + Ar[N] * 2 + Ar[O] * 6 = 40. 078 + 14. 0067 * 2 + 15. 9994 * 6 = 164. 0878

Mr[MgO] = Ar[Mg] + Ar[O] = 24. 305 + 15. 9994 = 40. 3044

Mr[Mg3N2] = Ar[Mg] * 3 + Ar[N] * 2 = 24. 305 * 3 + 14. 0067 * 2 = 100. 9284

Mr[MgCO3] = Ar[Mg] + Ar[C] + Ar[O] * 3 = 24. 305 + 12. 0107 + 15. 9994 * 3 = 84. 3139