The weak base ionization constant for C5H5N is equal to: A. [C5H5N-][HOH]÷[C5H5N]
B. [C5H5NH+][OH-]÷[C5H5 N]
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Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

How are the terms group and period used on the periodic table