Finding Riboflavin Concentration in Tablet
I need help understanding how to solve for the riboflavin concentration in a tablet. Here's the problem:
The ribofalvin concentration in an unknown powder solution is 50.4 ppm. The total volume of the unknown powder solution is 250.00 mL. What is the concentration in the tablet (mg riboflavin/tablet) if the mass of the tablet = 0.6645g and the mass of the powder = 0.5171g?
The answer is supposed to be 16.2mg but I don't understand how to solve the problem.