What is used in Gel electrophoresis to separate the fragments based on size?

It’s science but they don’t have that as a subject

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)

Which of the following molecules is polar? c3h7oh c2h5cooh

How big are the bighest ocean waves at mavericks