If 0.5 g of a drug sample were dissolved in 25 mL solvent, how would you describe its solubility?

Answer 1

There are many ways to "describe its solubility", but here are 2 of the more common ways...

0.5 g / 25 ml = 0.02 g / ml

or 0.02 g / ml x 100 ml = 2 g / 100 ml