CHEMISTRY

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  • A 22.0-g sample of HF is dissolved in water to give 2.0 Ã— 102 mL of solution. The concentration of the solution is:
  •  1.10 M
  •  0.11 M
  •  5.5 M
  •  11.0 M
  •  0.22 M
  •  
  • ???????
  • What volume of 18 M sulfuric acid must be used to prepare 1.90 L of 0.162 M H2SO4?
  •  5.5 mL
  •  1.5 Ã— 103 mL
  •  0.31 mL
  •  3.2 mL
  •  17 mL
  •  
  • ???????????????
  • The following reactions
  •  
  • 2K(s) + Br2(l) → 2KBr(s)
  •  
  • AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
  •  
  • HCl(aq) + KOH(aq) → H2O(l) + KCl(aq)
  •  
  • are examples of
  •  redox reactions.
  •  precipitation reactions.
  •  precipitation (two) and acid-base reactions, respectively.
  •  redox, precipitation, and acid-base, respectively.
  •  None of these choices are correct.
  •  
  • ??????????????????
  • Which pair of ions would not be expected to form a precipitate when dilute solutions of each are mixed?
  •  Al3+, S2–
  •  Mg2+, SO42–
  •  Ba2+, PO43–
  •  Pb2+, Cl–
  •  Pb2+, OH–
  •  
  • ???????????
  • In the balanced molecular equation for the neutralization of sodium hydroxide with sulfuric acid, the products are:
  •  NaSO3 + 2H2O
  •  NaSO4 + H2O
  •  2NaSO4 + H2O
  •  Na2S + 2H2O
  •  Na2SO4 + 2H2O
  • ???????????
  • The oxidation state of iodine in IO3– is:
  •  â€“5
  •  â€“3
  • +3
  • +5
  • 0

 +3PLEASE ANSWER THESE QUESTIONS ASAP
I NEED IT TO BE DONE IN 1 HOUR 

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