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The aqueous solution with the lowest pH is:
Select one:
a. 0.01 M HCl.
b. 0.1 M acetic acid (pKa = 4.86).
c. 0.1 M formic acid (pKa = 3.75).
d. 0.1 M HCl.
e. 10 to 12 M NaOH.
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In one year, a population size of 500 changed to 496. What is the per-capita rate of increase/decrease?
characterstic of phylum arthropoda
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