已知:2Al (s)+ O 2 (g)=== Al 2 O 3 (s) △H=' -1' 644.3 kJ? mol -1 2Fe (s) + O 2 (g)=== Fe 2 O 3 (s) △H=' -815.88' kJ? mol -1 试写出铝粉与氧化铁粉末发生铝热反应的热化学方程式___________________________。
【单选题】What 's the meaning fo the underlined sentence: Fast-food dining, even within the home, is becoming a way of life for too many of us. Work schedules and individual organized activities limit the quant...
【单选题】What 's the meaning fo the underlined sentence: Fast-food dining, even within the home, is becoming a way of life for too many of us. Work schedules and individual organized activities limit the quant...