June 2013 Chemistry Regents #51-53

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Question

 

  Base your answers to questions 51 through 53 on the information below and on your knowledge of chemistry.

 

When magnesium is ignited in air, the magnesium reacts with oxygen and nitrogen.

The reaction between magnesium and nitrogen is represented by the unbalanced equation below.

Mg(s) + N2(g) --> Mg3N2(s)

51 Balance the equation in your answer booklet for the reaction between magnesium and  nitrogen, using the smallest whole-number coefficients. [1]

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__3__Mg(s) + ____N2(g) --> _____Mg3N2(s)

or

__3__Mg(s) + __1__N2(g) --> ___1__Mg3N2(s)

NOT

__3__Mg(s) + __0__N2(g) --> ___0__Mg3N2(s)

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Questions 1-10 Questions 11-20 Questions 21-30 Questions 31-40 Questions 41-50

Question 51-53 Questions 54-56 Questions 57-59 Questions 60-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-77  Questions 78-80  Questions 81-82  Questions 83-85

 

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