- According to the quantum theory of the atom, where may the electrons of an atom be found?

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The concentration of HCl, a strong acid is 0.5 M. If 20 ml HCl is needed to titrate 40 mL of NaOH, what is the concentration of NaOH? How many feet high would one million dollars reach? (..in one hundred dollar bills)? Explian how to operate the distribution board 220v/ 50hz, how to wire it? A pair of dice is tossed. Find the probability that the maximum of the two numbers is greater than 4? Hey guys! Can you give me any hints on how to solve this equation?: 2tanx-4cotx=cscx?

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