Ответ:

Объяснение:

Mr(FeO3) = 56 + 16 * 3 = 104

Mr(H2SO4) = 1 * 2 + 32 + 16 * 4 = 98

Mr(CaCO3) = 40 + 12 + 16 * 3 = 100

Mr(Ca(OH)2) = 40 + (16 + 1) * 2 = 74

Mr(NaNO3) = 23 + 14 + 16 * 3 = 85

Mr(SiO2) = 28 + 16 * 2 = 60

Mr(P2O5) = 31 * 2 + 16 * 5 = 142

Mr(H3PO4) = 1 * 3 + 31 + 16 * 4 = 98

Mr(KOH) = 39 + 16 +1 = 56

Mr(MgCl2) = 24 + 35,5 * 2 = 95

Mr(Ca(NO3)2 = 40 + 14 * 2 + 16 * 6 = 164

Mr(Al2(SO4)3 = 27 * 2 + 32 * 3 + 16 * 12 = 342

Mr(SO3) = 32 + 16 * 3 = 80

Mr(N2O3) = 14 * 2 + 16 * 3 = 76

Mr(O3) = 16 * 3 = 48