問題詳情
6 .在高爐中，丙的反應式中，何者為還原劑？
(A)Fe2O3
(B)CO
(C)Fe
(D)CO2。
(A)Fe2O3
(B)CO
(C)Fe
(D)CO2。
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增
內容推薦
- 【題組】4 .承上題，在甲反應式中，若將 20 公斤的氧化鐵與足量的碳反應，所產生的鐵其質量為多少公斤?(A)8 (B)14 (C)20 (D)24
- 【題組】3 .甲為煤焦與鐵礦的反應式，題目中的細數尚未平衡。經平衡後，係數為最簡單整數時，所有係數總和為何? (A)7 (B)9 (C)12 (D)15
- 【題組】2 .下列有關高爐煉鐵的原理說明，何者錯誤？(A)為氧化還原反應的應用 (B)反應中，鐵的氧化物發生還原，而碳發生氧化 (C)鐵對氧的活性大於碳，可作為還原劑(D)灰石所形成的熔渣可防止高溫的
- ( ) 下列哪一個圖形可表式氮(N2) 和氧(O2) 化合成一氧化氮(NO) 的分子模型?(A) (B) (C) (D)
- 茶多酚為茶葉含有的成分之一，許多醫學實驗已證明這一類多酚化合物具有抗氧化的功能，可以和 造成人體細胞氧化、老化的物質發生反應。試問 甲、泡麵包裝內的維生素 E ；乙、柳丁汁中的維生 素 C；丙、
- 下列有關硫粉、鎂粉與碳粉的燃燒時驗敘述，有哪些是正確的? (A)乙 (B)乙、丁 (C)乙、丙、丁 (D)甲、丙
- 某化合物與硫酸(H2SO4)反應後產生硫酸鈉(Na2SO4)、水及二氧化碳，該化合物最可能為何者? (A)NaOH (B)NaHCO3 (C)CaSO4 (D)CaCO3
- 下列化學反應平衡式的寫法正確的有幾項?(A)1 項 (B)2 項 (C)3 項 (D)4 項 (甲) Na+ 2H2O → NaOH + H2 + O2 (乙) 2H2O2+ MnO2 → 2
- 等體積的兩容器中，分別盛有等質量的氧氣(O2)和臭氧(O3)，在右表的性質中，此兩容器內的氧氣與臭氧有哪些性質的數值相等? (A)甲、乙 (B)甲、丙 (C)乙、丙 (D)甲、乙、丙
- 某原子 A 的原子序為 8，中子數為 9，電子數為8，則該雙原子分子 A2的分子量大約為若干? (A)17 (B)25 (C)34 (D)50
內容推薦
- 【題組】3 .需要鎂和氧氣各多少公克，可以燃燒生成 2公克的氧化鎂？(A)鎂 2 公克、氧氣 0.8 公克(B)鎂 0.8 公克、氧氣 2 公克(C)鎂 0 公克、氧氣 0 公克(D)
- Mrs. Wang wasn’t watching TV, but her children _____.(A) are(B) were(C) was(D) is
- _____ your homework before you start to surf the Net.(A) To finish(B) Finishes(C) Finishing(D) Fi
- Becky: When _____ you last _____ that red coat? Judy: I last _____ it the day before yesterday.(A
- My cousin, Ann, is really sorry for _____ me _____ so long.(A) to keep; wait(B) keep; wait(C) kee
- Mr. Yang’s short stories are not good _____ share with his friends, but he still enjoys ______.(A
- Hey! ______ a new bakery around here. Isn’t _____ a good idea to give it a try now?(A) It’s; ther
- Dad often tells us _____ stay up (熬夜) too late because ______ enough rest is important.(A) do not
- _____ for thirty minutes every day _____ hard because I am too busy working.(A) Exercising; are(B
- I was playing the guitar then, so I _____ hear your voice (聲音).(A) didn’t (B) don’t(C) am not(D)
- Sally: Mom, I’m late for schoool, but I can’t find my glasses.Mom: ______ Let’s look for them tog
- Brian: Does your husband help you with any housework? Angel: Of course. _____.(A) He eats pizza o
- 【題組】(A) made(B) making(C) makes(D) to make
- 【題組】(A) Any ideas?(B) What’s wrong?(C) Not really.(D) All right.
- 【題組】What does room service mean?(A) To have dinner at a hotel restaurant.(B) To do some housework
- 【題組】Which is true about “Mid-Autumn Festival”?(A) Families share a big meal and admire the moon t
- 【題組】Which is NOT true about “The Chanthaburi Fruit Fair”?(A) It’s to celebrate the summer fruit h
- Mom: Stop using a phone or listening to music when you are walking. Be sure to look both ways bef
- All the tickets to the movie ________ Zack two thousand dollars.(A) took (B) had (C) spent (D) co
- My friends traveled to Japan and ________ a five-star hotel for four nights.(A) lived in (B) stay
- Jimmy had a sore throat right before the singing contest(比賽). He sang _____.(A) worse (B) more te
- Peter doesn’t run as _______ as his classmate, Ray. In fact, he runs the most slowly in his class
- Nancy: ________ did Nick do on the test? Brian: He did it quite well.(A) How (B) What (C) Why (D)
- Nina sells fruit _________ Beach Road and First Street every morning.(A) between (B) on the way (
- The bank is on the right side of the street, and the pet shop is on the other side. In other word