June 2019Chemistry Regents #52-54

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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 Questions 52-54 Questions 55-57 Questions 58-61 Questions 62-65 Questions 66-69 Questions 70-73 Questions 74-77 Questions 78-80 Questions 81-85  

 

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Question 52-54

 

 

Base your answers to questions 52-54

 

The atomic mass and natural abundance of the naturally occurring isotopes of hydrogen are shown in the table below.

The isotop3 H-2, also called deuterium is usually represented by the symbol "D". Heavy water forms when deuterium reacts with oxygen, producing molecules of D2O.

52. Explain, in terms of subatomic particles, why atoms of H-1, H-2, and H-3 are each electronically neutral.

Answer--> # protons equal  # electrons

53 Determine the formula mass of D2O.

Answer-->20 u.

54 Based on Table N, identify the decay mode of tritium.

Answer--> Beta....beta minus...or the symbol

e F halides

 

see Table F halides

on to Questions 55-57

 

 

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 Questions 52-54 Questions 55-57 Questions 58-61 Questions 62-65 Questions 66-69 Questions 70-73 Questions 74-77 Questions 78-80 Questions 81-85  

 

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