erykahg1p
erykahg1p erykahg1p
  • 24-02-2017
  • Physics
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3. Determining the pH of substances such as purple grape juice and catsup using test strips can be difficult. why

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randysixx
randysixx randysixx
  • 24-02-2017
acidic so under 7 and its hard? its actually kind of easy
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