What is the correct answer and solution of this Analytical Chemistry problem?

Question

1. A pill weighing 325mg contains Captopril, a medication for high blood pressure. What is the concentration of Captopril in ppm?
2. A patient is given 1000mL of 5 percent glucose C6H12O6 solution intravenously in a 12 hour period. How many grams of glucose did the patient receive per hour?

Answer 1

#2 is answerable with the given information.

Percent solutions of this type are mass/volume. So in the 1000 mL, 5% glucose solution there would need to be 50g of glucose: 50/1000 = .05 x 100 = 5%. If the concentration and/or volume are less "easy" to deal with, you can solve for the mass used algebraically. x/volume = decimal form of percent . Solve for x.

Then it just becomes a rate problem 50g/12 hours = 4.167 g/hr

There are situations where % solution is volume/volume. Keep your eyes and mind open!