January 2015 Chemistry Regents #59-61

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Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Question 51-53 Questions 54-55
 Questions 56-58 Questions 59-61 Questions 62-63 Questions 64-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-81 Questions 82-85

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Questions

 

 

Base your answers to questions 59 and  61 on the information below.

 The diagrams below represent ball-and-stick models of two molecules. In a ball-and-stick model, each ball represents an atom, and the sticks between balls represent chemical bonds.

59 Draw a Lewis electron-dot diagram for an atom of the element present in all organic compounds. [1]

link to see answer to 59

60 Explain, in terms of carbon-carbon bonds, why the hydrocarbon represented in diagram B is saturated. [1]

Answer==>All single bonds

61 Explain why the molecules in diagrams A and B are isomers of each other. [1]
Answer==>same molecular formula, but have different structural formulas

on to Questions 62-63

 

 
 

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Question 51-53 Questions 54-55
 Questions 56-58 Questions 59-61 Questions 62-63 Questions 64-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-81 Questions 82-85

 

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