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USA Physics and Chemistry Contests
National Chemistry Olympiad
2010 National Chemistry Olympiad
12
12
Part of
2010 National Chemistry Olympiad
Problems
(1)
2010 USNCO Local #12: Molarity of Acetic Acid
Source:
11/22/2012
Commercial vinegar is a
5.00
%
5.00\%
5.00%
by mass aqueous solution of acetic acid, \ce{CH3CO2H}
(
M
=
60.0
)
(M=60.0)
(
M
=
60.0
)
. What is the molarity of acetic acid in vinegar? [density of vinegar = 1.00g/mL)
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0.833
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1.00
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C
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1.20
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3.00
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<span class='latex-bold'>(A)</span>\hspace{.05in}0.833 M\qquad<span class='latex-bold'>(B)</span>\hspace{.05in}1.00 M\qquad<span class='latex-bold'>(C)</span>\hspace{.05in}1.20 M\qquad<span class='latex-bold'>(D)</span>\hspace{.05in}3.00 M\qquad
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<
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0.833
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B
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<
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1.00
M
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C
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1.20
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D
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3.00
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