202020247上英语周报答案

202020247上英语周报答案

10.C解析:木题考查黄铁矿催化氧化原理分析。反应1中的铁由+2价变为+3价,氧由0价变成一2价,根据得失电子守恒,反应的离子方程式为4Fe(NO)2++O2+4H+4Fe3++4NO+2H2O,A项正确;反应且中的Fe由+3价变成+2价,FesS中硫元素化合价升高,所以反应Ⅱ的氧化剂是Fe2+,B项正确;反应Ⅲ的离子方程式为Fe2++NO一Fe(NO2,无元素化合价变化,所以反应是非氧化还原反应,C项错误;由循环图可知,一氧化氮参与反应但反应前后性质和质量不变,所以NO作催化剂,D项正确。

202020247上英语周报答案

ear jonaIm glad to hear from you and i d like to share withyou something about serving chopsticksi As you know, people in China are encouraged to useserving chopsticks, which are different from personal chopticks in shape and colour serving chopsticks are used totake food from shared dishes. You can add food to yourbowl with them, but never place them into your mouth oryour own bowlUsing serving chopsticks benefits everyone at tableFirst of all, it prevents diseases from’ spreading while weare eating together. We can also use them to put food intoothers bowls, thus creating a pleasant and harmoniousdining atmosphereHoping you’l come to China to experience themfirst handYoourL i hua

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202020247上英语周报答案

10.C解析:木題考查黃鐵礦催化氧化原理分析。反應1中的鐵由+2價變為+3價,氧由0價變成一2價,根據得失電子守恒,反應的離子方程式為4Fe(NO)2++O2+4H+4Fe3++4NO+2H2O,A項正確;反應且中的Fe由+3價變成+2價,FesS中硫元素化合價升高,所以反應Ⅱ的氧化劑是Fe2+,B項正確;反應Ⅲ的離子方程式為Fe2++NO一Fe(NO2,無元素化合價變化,所以反應是非氧化還原反應,C項錯誤;由循環圖可知,一氧化氮參與反應但反應前後性質和質量不變,所以NO作催化劑,D項正確。

ear jonaIm glad to hear from you and i d like to share withyou something about serving chopsticksi As you know, people in China are encouraged to useserving chopsticks, which are different from personal chopticks in shape and colour serving chopsticks are used totake food from shared dishes. You can add food to yourbowl with them, but never place them into your mouth oryour own bowlUsing serving chopsticks benefits everyone at tableFirst of all, it prevents diseases from’ spreading while weare eating together. We can also use them to put food intoothers bowls, thus creating a pleasant and harmoniousdining atmosphereHoping you’l come to China to experience themfirst handYoourL i hua

以上就是202020247上英語周報答案，更多英語周報答案請關註本網站。