Which of the following diagram(s) show a pure substance?

A. not listed here

b. A, D, E, F, H and I

c. A, B, C, E, F and H

d. A, B, E, F, G, H and I

Which of the following diagrams show a pure substance A not listed here b A D E F H and I c A B C E F and H d A B E F G H and I class=