Which example is a trace fossil? {a} dinosaur egg {b} dinosaur footprint {c} dinosaur bone {d} shark tooth

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 process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation

How can parts of a solution be separated by chromatography?