Обчислити Mr речовин​

Объяснение:

Mr(Al(NO3)3) = 27 + 14*3 + 16*9 =213

Mr(K2SO4) = 39*2 + 32 + 16*4 =174

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

Mr(CuO) = 64+16 = 80

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

Mr(FeO) = 56 + 16 = 72

Mr(Al2O3) = 27*2 + 16*3 = 102

Mr(K2CO3) = 39*2 + 12 + 16*3 = 138

Mr(Ca3(PO4)2 = 40*3 + 31*2 + 16*8 =310

Mr(Fe2(SO4)3) = 56*2 + 32*3 + 16*12 = 342

Mr(Na3PO4) = 23*3 + 31 + 16*4 =164

Mr(MgO) = 24 + 16 = 40