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 pH - Wikipedia, the free encyclopedia
In chemistry, pH is a measure of the activity of the (solvated) hydrogen ion. p[H], which measures the hydrogen ion concentration, is closely related to, and is ...
http://en.wikipedia.org/wiki/PH

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 Water properties: pH, from USGS Water-Science School
Jan 10, 2013 ... pH: A diagram about pH, from from USGS Water Science for Schools.
http://ga.water.usgs.gov/edu/ph.html

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 pH Scale
The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 ...
http://www.elmhurst.edu/~chm/vchembook/184ph.html

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 What is pH? | Acid Rain | US EPA
The pH scale measures how acidic or basic a substance is and ranges from 0 to 14.
http://www.epa.gov/acidrain/measure/ph.html

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 pH as a Measure of Acid and Base Properties
pH. The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the ...
http://hyperphysics.phy-astr.gsu.edu/‌hbase/chemical/ph.html

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 pH
pH. pH is a measure of the concentration of hydrogens ions (= H+) (= protons) in a solution. Numerically it is the negative logarithm of that concentration ...
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/pH.html

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 PH: Summary for Parker-Hannifin Corporation Com- Yahoo! Finance
View the basic PH stock chart on Yahoo! Finance. Change the date range, chart type and compare Parker-Hannifin Corporation Com against other companies.
http://finance.yahoo.com/q?s=PH

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 Miami Museum of Science-The pH Factor
CLICK on any purple button to find out about pH. Excite · Explore · Explain · Expand · Extend · Exchange · Examine · Teacher's Guide. This resource has been ...
http://www.miamisci.org/ph/

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