August 2015 Chemistry Regents #58-59

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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

Questions 51-54 Questions 55-57 Questions 58-59 Questions 60-61 Questions 62-65 Questions 66-68 Questions 69-72 Questions 73-74  Questions 75-76  Questions 77-78  Questions 79-80  Questions 81-82  Questions 83-85

 

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Questions 58-59

 

 

Base your answers to questions 57 and 59 on the information below and on your knowledge of chemistry.

A sample of a substance is a liquid at 65C. The sample is heated uniformly to 125C. The heating curve for the sample at standard pressure is shown below.

58 Determine the boiling point of the sample at standard pressure. [1]

Answer--> 95oC

59 State what happens to the potential energy of the particles of the sample during time interval BC. [1]

Answer--> Potential Energy Increases

on to Questions 60-61

 

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

Questions 51-54 Questions 55-57 Questions 58-59 Questions 60-61 Questions 62-65 Questions 66-68 Questions 69-72 Questions 73-74  Questions 75-76  Questions 77-78  Questions 79-80  Questions 81-82  Questions 83-85

 

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