What do I do for the drawing, I honestly don't really know anything about this and find it extremely confusing???

What is the molecular weight of copper

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium

What is the difference between a substance "getting wet" and "being dissolved" in a liquid at the particulate level?