What do the sections between the lines on a phase diagram represent

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

the answer is barium and copper bromide

your answer is c) plasma

~*"auba14"*~

answer; 4 electrons;