Using your understanding of conjugate acids and bases pick the correct statement from the multiple choices. a) hcnh+ is the conjugate base of hcn. b) nh2- is the conjugate acid of nh3. c) hpo42- is the conjugate base of hpo42-. d) so42- is the conjugate base of h2so4. e) haso32- is the conjugate acid of aso33-.

Option (e) is correct

Explanation:

According to definition of acid-conjugate base or base-conjugate acid pair-

if HA is an acid then is it's conjugate base

if B is a base then is it's conjugate acid

a) HCN is an acid . So, is it's conjugate base

b) is a base. So, is it's conjugate acid

c) Conjugate base of is

d) is the conjugate base of

e) is the conjugate acid of

So, option (e) is correct

it's c. elements are placed in rows based on how may valencies electrons have.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .