1.)when oh- and h+ ions are brought together, they quickly combine to form water molecules hydroxide hydronium hydrates 2.)the number of moles of h+ ions in a liter of distilled (pure) water is: 1 x 10-7 1 x 10-14 0.5 x 10-7 2 x 10-14 none of these 3.)the ion product of water: varies with ph is only applicable to neutral water remains constant regardless of the ph ranges between 1.0 and 10-14

1) Answer is: water molecules.

Balanced chemical reaction: H⁺ + OH⁻ → H₂O.

Neutralization is is reaction in which an acid (for example hydrochloric acid HCl) and a base (for example sodium hydroxide) react quantitatively with each other. In this reaction water and salt are products of reaction.

2) Answer is: 1 x 10⁻⁷.

Water dissociates (autoionization) to form hydrogen ions (H⁺) and hydroxide (OH⁻) ions. The protons (H⁺) hydrate as hydroxonium ions (H₃O⁺).

The Kw (the ionic product for water) at 25°C is 1·10⁻¹⁴ mol²/dm⁶ or 1·10⁻¹⁴ M². Concentration of hydrogen ions and hydroxide ions in pure water are the same.

Kw = [H⁺] · [OH⁻].

[H⁺] = [OH⁻] = 1·10⁻¹⁴ mol²/dm⁶.

3) Answer is: remains constant regardless of the pH.

For example, the Kw (the ionic product for water) at 0°C is 0,12·10⁻¹⁴ mol²/dm⁶ and the Kw (the ionic product for water) at 25°C is 1·10⁻¹⁴ mol²/dm⁶.

The ion product of water only varies with different temperature.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.