問題詳情
36.某化合物的實驗式為CX2，其中X為某元素的代號，已知此化合物在STP（0℃，1大氣壓）時的蒸氣密度為1.25克/升，且該化合物含碳85.7 %，有關於此化合物的敘述，下列何者正確？
(A)式量為
(B)分子量為
(C) X可能為H
(D) X可能為O
(E)其分子式為CO2
(A)式量為
(B)分子量為
(C) X可能為H
(D) X可能為O
(E)其分子式為CO2
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- Due to the _____ of the basic knowledge of this chapter, Daniel feels it is hard for him to ____
- The chemistry teacher gave each student _____ _____ on how to do the experiment because he wante
- People _____ at his _____ talent because he can easily solve a problem of more than 10 digits in
- After their fight, Billy and Josh _____ their differences.(A) resolved(B) overlooked(C) ventured
- 一彈簧長20cm，彈力常數為10 kgw/m，一端懸於天花板，另一端懸掛3kgw之重錘，如附圖所示，當系統達平衡時，彈簧全長為30cm，則木板作用於重錘之力大小為多少？ (A) 0.5 kgw
- 【題組】Why does the author mention johnnycake in paragraph 2?(A) To show people's affection fo
- 下列有關鹼金屬族中的各元素，其原子序增加，則：(A)原子金屬性增強 (B)價電子數增加 (C)原子半徑增加 (D)形成陽離子所需能量減少 (E)金屬熔點升高
- The Lord of the Rings movies were _____ from a series of books.(A) sipped(B) adapted(C) wept(D)
- Some people may feel _____ to and _____ of those using name-brand products. They may think they
- The police are _____ the trafficking of the _____ found in this ship. It is against law to buy a
內容推薦
- The little boy’s _____ facial expression always leads people to believe his _____. They never do
- The government plans to _____ more on tobacco, which will cause the price rise.(A) tan(B) top(C)
- If you’re bitten by a _____ snake, you need to get to a doctor right away.(A) adorable(B) musica
- Good time _____ will enable students to be more _____ in their studies. They won’t waste time un
- V. Vocabulary 4000 (15%)Just because a homeroom teacher takes a _____ attitude toward his or her
- George will ____ the school talent show. He is going to perform magic tricks.(A) run out of(B) b
- You’ll get a large fine if you _____ trash in the street.(A) ruin(B) dump (C) regard(D) manage
- Giant is a Taiwanese _____ of high-quality bicycles and parts.(A) capital(B) manufacturer(C) wor
- 【題組】The word obsolete in paragraph 3 is closest in meaning to which of the following word/expres
- 碳酸鈣粉末常用來噴灑經酸雨侵襲過的湖泊，以減輕酸害。若於一稀鹽酸溶液中加入過量的碳酸鈣固體，則下列哪一個圖最能代表其 pH 值隨時間的變化情形？ (A) (B) (C) (D)
- 三、文法測驗 (15%，每題1分)The _____ speaker made me sleepy.(A) bores(B) bored(C) born(D) boring
- Steven wants to buy a new scooter, so it _____ that he is trying to save money.(A) throws up(B)
- 【題組】According to paragraph 4, southerners would most likely prefer which of the following cornbr
- 一、保險公司在規劃保險契約時，幾乎不可避免地會設定一些「除 外不保事項」，為何如此？請說明理由。（25分）
- 【題組】The word nascent in paragraph 2 is closest in meaning to which of the following word/express
- The motorcyclist suffered multiple _____ _____ from the traffic accident, with his lungs, liver
- The _____ has a very _____ cause, trying to use his novel to change the world for the better.(A)
- 【題組】The word indefinitely in paragraph 4 is closest in meaning to which of the following word/ex
- Jenny saw a _____ of birds flying in the sky.(A) school(B) heard (C) flock(D) group
- 下圖是分析碳氫化合物組成的裝置。將試樣置於純氧中燃燒後，產生水蒸氣及二氧化碳，使之通過甲、乙兩 U 型管。下列關於甲管的敘述，何者正確？ (A)甲管裝氫氧化鈉，以吸收產生的水蒸氣 (B)甲管裝
- Parents should closely _____ the _____ developments of their children and educate them to better
- Taipei 101 is one of the most important _____ sites in Taiwan.(A) billion(B) paradise(C) tourist
- A _____ of the students expect to _____ the Christmas party time. Most of them want to enjoy it
- David promised he would _____ at the party, but he didn’t show up yet.(A) work out(B) pass aroun
- _____, you can make water from hydrogen and oxygen. It would be a _____ if you could make water