Chemical Analysis: Concentration Calculations
Calculation of Concentration:
To find the concentration of glucose in ppm (parts per million) by mass, we need to use the given information:
Volume of the solution: 100.0 mL
Mass of glucose: 40.0 mg
Density of the solution: 1.00 g/mL
Steps to Calculate:
1. Convert volume to mass using density:
Mass of solution = Volume x Density = 100.0 mL x 1.00 g/mL = 100.0 g
2. Convert mass of glucose to grams:
Mass of glucose = 40.0 mg × (1 g / 1000 mg) = 0.04 g
3. Calculate concentration in ppm by mass:
Concentration (ppm) = (Mass of glucose / Mass of solution) × 1,000,000
Concentration (ppm) = (0.04 g / 100.0 g) × 1,000,000 = 400 ppm
Therefore, the concentration of glucose in the solution is 400 ppm by mass, indicating a relatively high amount of glucose in the solution.