January 2011 Chemistry Regents #64-65

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Base your answers to questions 64 to 65 on the information below.

A 20.0-milliliter sample of HCl(aq) is completely neutralized by 32.0 milliliters of 0.50 M KOH(aq).

64 Calculate the molarity of the HCl(aq). Your response must include both a numerical setup and the calculated result. [2]

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SET UP 

(MA)(20.0 mL) = (32.0 mL)(0.50 M)

Answer==> 0.80 M

(Titration MV=MV)

65 According to the data, to what number of significant figures should the calculated molarity of the HCl(aq) be expressed? [1]

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2

 based off of 0.50M

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

Questions 51-53 Questions 54-55 Questions 56-57 Questions 58-59 Questions 60-61 Questions 62-63 Questions 64-65 Questions 66-68 Questions 69-71 Questions 72-74 Questions 75-77 Questions 78-80 Questions 81-83

 
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