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Mathematics 7 Online
OpenStudy (anonymous):

Will award medal! P(t) = –log10 t. The variable t represents the amount of hydronium ions, and p(t) gives the resulting pH level. Water at 25 degrees Celsius has a pH of 7. Anything that has a pH lower than 7 is called acidic, while pH's above 7 are basic or alkaline. Seawater has a pH just over 8, while lemonade has a pH of approximately 3. Create a graph of the pH function. Locate on your graph where the pH value is 0 and where it is 1.

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