Answers by visitors named: barco

the benzene ring because it contains double bonds

if the mass you gave is in grams, then just simply use the formula density=mass/volume.

just use the formula pH + pOH = 14.0 where pH is unknown and pOH is currently the pH given in the question because, it is a weak base.

an ionic because it consisted of a Na+ ions and Cl- ions.

the primary structure consisted of beta-pleated sheet..so the secondary structure is where the structure coiled and characterized by an alpha-helix. i don't about random coils... i chose hydrogen bond but its wrong..so its alpha helix....