Ответ:
Mr(3Fe2O3) = 3 × 56 + 2 × 16 × 3 = 264
Mr(2AlCl3) = 2 × 27 + 35.5 × 3 = 160.5
Mr(Ca(NO3)) = 40 + 14 + 16 × 3 = 102
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Ответ:
Mr(3Fe2O3) = 3 × 56 + 2 × 16 × 3 = 264
Mr(2AlCl3) = 2 × 27 + 35.5 × 3 = 160.5
Mr(Ca(NO3)) = 40 + 14 + 16 × 3 = 102