# 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.