To determine the number of milligrams (mg) in 100 ml of a solution with a 50% concentration, we need to know the specific substance or solute present in the solution. The concentration given as 50% is a relative measure and does not provide the necessary information to convert to milligrams.
Concentration is typically expressed in terms of weight/volume (w/v), meaning grams of solute per 100 ml of solution. However, without the specific substance or solute, we cannot determine the weight in grams or convert it to milligrams.
Please provide the name or details of the solute in the solution to accurately calculate the number of milligrams.