Mineral Groups u-243

the ratio of the conjugate base to the acid required to attain the desired ph.

a corroding iron, if that's one of your choices

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

you need to have a picture of the atom that way we can answer it