June 2018  Chemistry Regents #41-45

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41 An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity?

(1) carbon      (3) nitrogen

(2) fluorine      (4) oxygen

   
42 What is the concentration of an aqueous solution that contains 1.5 moles of NaCl in 500. milliliters of this solution?

(1) 0.30 M      (3) 3.0 M

(2) 0.75 M      (4) 7.5 M

   
   

 

44 Based on Table I, what is the H value for the production of 1.00 mole of NO2(g) from its elements at 101.3 kPa and 298 K?

(1) +33.2 kJ     (3) +132.8 kJ

(2) -33.2 kJ     (4) -132.8 kJ

   
45 Which equation represents an addition reaction?

(1) C3H8  +  Cl2 → C3H7Cl    +  HCl

(2) C3H6  + Cl2 → C3H6Cl2

(3) CaCl2  +  Na2CO3 → CaCO3 + 2NaCl

(4) CaCO3 → CaO + CO2

   

 

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 57-59 Questions 60-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-79  Questions 80-82  Questions 83-85 

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