Which of the following could not act as a medium for a mechanical wave? A. Liquid water
B. A solid rope
C. Empty space
D. air

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

answeridentity;