What is the pH of a sodium hydroxide solution that has an OH- concentration of 1.5 × 10^-10? ​

Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.

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

Ab c or d ? i’m not sure what the answer is