January 2018 Chemistry Regents #51-54

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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 55-56 Questions 57-59 Questions 60-62 Questions 63-65  Questions 66  Questions 67-69  Questions 70-72 Questions 73-77 Questions 78-81 Questions 82-85  

 

 

 

 

 #51-54
  

51 Convert the melting point of mercury to degrees Celsius. [1]

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Answer-->  -39C

 

52 Draw a Lewis electron-dot diagram for a molecule of hydrogen fluoride, HF. [1]

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53 Show a numerical setup for calculating the quantity of heat in joules required to completely vaporize 102.3 grams of H2O(ℓ) at 100.°C and 1.0 atm. [1]

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Answer-->   q= (102.3 g)(2260 J/g)

 

54 State the color of methyl orange indicator after the indicator is placed in a solution of 0.10 M NH3(aq). [1]

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Answer-->yellow

 

  

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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 55-56 Questions 57-59 Questions 60-62 Questions 63-65  Questions 66  Questions 67-69  Questions 70-72 Questions 73-77 Questions 78-81 Questions 82-85