Mr (Fe2O3) = 160
w (O2) = 48 / 160 * 100 = 30 процетов
Mr (FeO) = 72
w (O2) = 16 / 72 * 100 = 22 процента.
Ответ: В Fe2O3
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Mr (Fe2O3) = 160
w (O2) = 48 / 160 * 100 = 30 процетов
Mr (FeO) = 72
w (O2) = 16 / 72 * 100 = 22 процента.
Ответ: В Fe2O3