June 2022 Chemistry Regents #78-82

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Questions 51-53 Questions 54-56 Questions 57-58 Questions 59-60 Questions 61-65 Questions 66-70 Questions 71-73 Questions 74-77 Questions 78-82 Questions 83-85  

  

 

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Question 78-82

 

 

 

During a laboratory activity, appropriate safety equipment is used and safety procedures are followed. A student constructs a voltaic cell with magnesium and copper electrodes. The diagram and net ionic equation below represent this cell and the reaction that occurs.

78 Identify the subatomic particles that flow through the wire as the cell operates. [1]

Answer--> electron

79 Compare the number of electrons lost to the number of electrons gained during the reaction in the operating cell. [1]

Answer--> equal

80 State the form of energy that is converted to electrical energy in the operating cell. [1]

Answer-->  chemical

81 Write a balanced equation for the half-reaction that occurs in the copper half-cell when the cell operates. [1]

Answer-->   2e-  + Cu2+ -->  Cu

82 Identify one metal from Table J that is more easily oxidized than Mg. [1]

Answer-->    Li, Rb, K, Cs, Ba, Sr, Ca, Na...any metal above Mg

Questions 83-85

 

  

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 51-53 Questions 54-56 Questions 57-58 Questions 59-60 Questions 61-65 Questions 66-70 Questions 71-73 Questions 74-77 Questions 78-82 Questions 83-85  

 

 

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