To balance a half-reaction in basic solution, you need to add enough of which substances to balance the equation?
h+ and h2o
h+ and oh-
h2o and no2
oh- and h+
oh- and h2o

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.