15. (07.06 MC) During an experiment, solid iodine was placed in a sealed container. The container was gradually heated and purple-colored vapors of iodine formed were observed.
Describe this system when it reaches phase equilibrium. (8 points)

c is the answer because when something is left after something evaporates that shows the chemical change.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

all eukaryotic cell have mitochondria : )

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.