Identify the specific species responsible for the acidic properties of a solution of hydrochloric acid.

Hydrochloric acid has a chemical formula of HCl. Now when this is mixed with water to form an aqueous solution, HCl dissociates into its component ions:

HCl  -->  H+  +  Cl-

HCl completely dissociates into H+ and Cl- because it is a strong acid. The species that is responsible for this acidic nature is H+ ion.

H+

the first point, i am pretty sure.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.