January 2016 Chemistry Regents #54-56

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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 54-56
 Questions 57-61 Questions 62-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-82 Questions 83-85

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Base your answers to questions 54 to 56 on the information below.

54 State evidence from the bright-line spectra that indicates element A is not present in the mixture. [1]

Answer==>All the lines of A are not present in the mixture

700nm is missing

55 Explain why the spectrum produced by a 1-gram sample of element Z would have the same spectral lines at the same wavelengths as the spectrum produced by a 2-gram sample of element Z. [1]

Answer==>  Mass does not determine the spectral lines.

56 Describe, in terms of both electrons and energy states, how the light represented by the spectral lines is produced. [1]

Answer==> Excited electrons fall to lower energy states releasing energy

 

 

 
 

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 54-56
 Questions 57-61 Questions 62-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-82 Questions 83-85

 

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