What are the isomers of C6H6Cl​

Note the ph and poh values labeled with letters on the ph scale below. based on log rules and the way ph is calculated, what is the difference in [oh– ] concentration between point a and point b. a) 10^1 b) 10^5 c) 10^6 d) 10^7

Why is an elements atomic mass not listed as a whole number on the periodic table

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)