問題詳情
27. For the mass spectrum of compound Y, we found 3 lines in the molecular ion region (M+, M++2, M++4), shows the peakheights in the ratio of 9 : 6 : 1. What would the compound Y be?
(A) cis-1,2-Dichlorocyclohexane
(B) 2-Chloropentane
(C) cis-1,2-Dibromocyclohexane
(D) Bromobenzene
(E) 1,2-Dibromopentane.
(A) cis-1,2-Dichlorocyclohexane
(B) 2-Chloropentane
(C) cis-1,2-Dibromocyclohexane
(D) Bromobenzene
(E) 1,2-Dibromopentane.
參考答案
無參考答案
內容推薦
- 【題組】What does the author conclude about some black adolescents?(A) They are persistent in their
- 【題組】Which of the following statements can be validated by the passage above?(A) Blackness is syn
- 【題組】What can be safely concluded about Shelby Steele?(A) He views racial identification as a pre
- 【題組】Like Fordham＇s research, in general, an ethnographic study may explore the following topics
- Signithea Fordham＇s 1986 ethnographic study of a mostly black high school in Washington, D.C., Black
- 【題組】According to the article, what is NOT one of the definitions of plutoids?(A) The plutoids mu
- 已知下列半反應的標準還原電位 ( E0 )： 請問反應式：2Na(s) + 2H2O(g) → 2Na+(aq) + 2OH-(aq) + H2(g) 的電壓為多少伏特？(A) -59(B
- 【題組】According to the article, in addition to Pluto the other known plutoid is _____.(A) Uranus (
- Looking for the missing check was like trying to find a _______ in a haystack.(A) horse (B) need
- 【題組】According to the article, why did IAU deprive Pluto of the status as a planet?(A) IAU though
內容推薦
- 【題組】Which of the following will not be included in the curriculum of social sciences?(A) politic
- As the belief that God directly controlled and influenced human behavior weakened during the ninetee
- 【題組】The article claims that Rozema has chosen to make the issue of slavery explicit because ____
- 【題組】What can we infer from the passage?(A) People in the past tended to be faltering in their re
- The new computer model’s primary ________ is the processor’s speed. It’s way too slow.(A) bevera
- A series of atrocious acts committed by ISIS have provoked anger around the globe.(A) destructive
- 【題組】The author claims that “Rozema creates a screen heroine we can root for.＂ Here “root for＂ is
- There have been many leaders in the world, but Adolf Hitler is considered the ultimate monstrous
- 【題組】This article would be most likely to be read in which of the following courses?(A) history (
- Given the spate of Jane Austen adaptations, one could be forgiven for anticipating diminishing retur
- In the face of a recession of the business, he decided to travel to the other countries to learn
- Which compounds have 3 signals in the 13C NMR spectrum? (A) I, II (B) III, IV (C) I, II, III (D)
- A great proportion of laborers, having lost their plots of lands, had no subsidiary earnings to c
- The gardening art in Central Florida makes the landscape vibrant and bright.(A) muffled (B) vigor
- The President’s speech has prompted an angry response from both political parties.(A) provoked (B
- Oil was used instead of water in magnetic compass to stabilize the compass disk from erratic move
- Freedom of expression is the matrix, the principle substance, of nearly every form of invention.(
- 【題組】Which statement below is incorrect about today＇s social scientists?(A) They refute the idea
- 【題組】It can be inferred from the first paragraph of the article that __________.(A) we don＇t need
- Which of the following would not produce nuclear magnetic resonance?(A) 2H (B) 14N (C) 16O (D) 1
- People in Minneapolis have called for a boycott of a local shopping mall over the unfair treatme
- B. Please choose the BEST answer to complete each sentence.One of the new smartphone’s features
- The key to avoid resource exhaustion is _________ — finding new and efficient ways of conserving
- Leonardo Da Vinci _________ us with his knowledge of invention, painting, sculpting, architectur
- If the product doesn’t work, the customers are given an option of a refund or a _________.(A) tr