問題詳情

六、氨可用空氣氧化生成硝酸，其反應如下：NH 3 + 2O 2 → HNO3 + H 2 O若進料只有氨及空氣（21%氧，餘為氮），反應後的無水氣體（water-free gas）組成（莫耳百分比，mol%）為 NH3 （0.8%）、HNO3 （9.5%）、O2 （3.8%）、N2（85.9%），試估算氨的轉化率及空氣的過量百分比（excess air percentage）。（20 分）

參考答案

答案：B
難度：困難0.366337
統計：A(24),B(37),C(11),D(16),E(1) #
個人：尚未作答書單：Whomever vs. whoever、code-switching

用户評論

【Dex Shih】評論

一直把honey掛在嘴上的是female.

【羅逸昇】評論

)A transition expression appears to signal speaker’s intent to introduce a new thought in an old subject.這句話是什麼意思?謝謝

【Dex Shih】評論

《轉折詞》Transitional ExpressionsThe usage of transitional expressions, such as therefore, however, and in addition, helps your readers understand how you have organized your material, making it easier for them to go from one point to the next in your writing. You can use transitional expressions to: add ideas, emphasize ideas, illustrate ideas, compare ideas, show cause and effect, and summarize ideas.