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1) How many milliliters of 0.20M PMSF stock solution do you need to make 80 mL...

1) How many milliliters of 0.20M PMSF stock solution do you need to make 80 mL 1.2 mM PMSF solution?

2) What is the [H+] (in M) if the pH is 2?

3) What is the [OH-] (in M) if the pH is 12.5 (the digits before the decimal point in a logarithm are not significant figures)?

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