The white Dwarfs are a group of stars that are- A.) Average in brightness but high in temperature

B.) Average in brightness and average in temperature

C.) Low in brightness but are average to high in temperature

D.) Extremely bright and hot

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

law of conservation of matter

i have no clue hope you find the answer