BIO 201 Final: Study guide for the final.pdf
2 Dec 2014
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D then a x d = b x c. Log 103 = 3 log 10-3 = -3 = 0. 001 -log 10-3 = 3. # of liters ph is a way to express [h+] [h+] means concentration of hydrogen ions, also called protons ph = -log [h+] If ph = 7. 0, the [h+] = 1. 0 x 10-7m h+ or 0. 0000001m h+ If ph = 2. 0, the [h+] = 1. 0 x 10-2m or 0. 01m h+ This could be 1. 0ml of stock + 9. 0ml of water or. 0. 1ml of stock + 0. 9ml of water or. 100ml of stock + 900ml of water or. If the stock (starting) concentration was 1. 0m, a 1:10 dilution makes it 0. 1m. If 1. 0ml of stock + 1. 0ml water, it is called a 1:2 dilution (not 1:1) The secret to dilutions (see p. 13 of the lab manual) C1 = concentration of the starting (stock) solution. V1 = volume of the starting (stock) solution taken out.
