2341kJmolCs的精選

問題詳情：Fe2O3(s)＋C(s)===CO2(g)＋2Fe(s)  ΔH＝＋234.1kJ/molC(s)＋O2(g)===CO2(g)ΔH＝－393.5kJ/mol則2Fe(s)＋O2(g)===Fe2O3(s)的ΔH等於()A．－824.4kJ/mol             B．－627.6kJ/molC．－744.7kJ/mol         ...