O 10
A substance that will only CONDUCT electricity under certain conditions is
called a
semiconductor
synthesizer
nonmetal
O
radiator

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

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