If the ph of a solution is 5, what is its oh ion concentration?

What element breaks down into yttrium-90?

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

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