What kind of decay, and why, would you expect from each of the following? note that if you look these up on the internet, you may find that each decays by more than one mechanism. the only correct/acceptable answers will be those that could be reasonably predicted based upon nuclear makeup.
35s
226ac
11c
52ti
257md
15o

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

there is none because earth is stationary and flat.