January 2012 Chemistry Regents #58-59

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Questions 1-10 Questions 11-20 Questions 21-30 Questions 31-40 Questions 41-50 Questions 51-54 Questions 55-57 Questions 58-59 Questions 60-62 Questions 63-65 Questions 66-69  Questions 70-71  Questions 72-74 Questions 75-78  Questions 79-81  Questions 82-85

Question

Base your answers to questions 58 through 59 on the information below. Two hydrocarbons that are isomers of each other are represented by the structural formulas and molecular formulas below. 58 Explain, in terms of bonds, why these hydrocarbons are unsaturated. [1] HIGHLIGHT TO SEE THE ANSWER A hydrocarbon molecule has two carbon -carbon double bonds and a hydrocarbon 2 molecule has one carbon-carbon triple bond or Both hydrocarbons have at least one multiple covalent bond between two carbon atoms. 59 Explain, in terms of structural formulas and molecular formulas, why these hydrocarbons are isomers of each other. [1] HIGHLIGHT TO SEE THE ANSWER The molecular formulas of the two hydrocarbons are the same, but the structural formulas are different. better-->same formula different structure on to Questions 60-62

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