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    Chemistry pH with buffer help Homework?

    "Calculate the pH after .15 mol solid NaOH is added to 1.00L of the following buffer: .5M propanoic acid (HC3H5O2, Ka= 1.3 x 10^-5) and .80M sodium propanoate. Many Thanks!
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    Bike things that you can carry people around called!!!!!?

    What are those things called that you attach to a or some bikes that several people can fit in and you can pull then around kind of like a carriage but instead of a horse it's a bike. Whrere could I find one? Amazon? Sports Authority? Please please help!!!!!!!!!!!
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    The 18th Century Enlightenment?

    Where can I find a really good documentary about the European Enlightenment online? Please help!!!
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    Apple Spinning Wheel Cursor Parodies?

    i don't kknow
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