Question Content
You have mixed the following known concentrations of a solution. You then measured their absorbance in the spectrophotometer. The data is given in the table below. Plot the data on the graph provided. The axes must be labeled with the variable and units, and the scale must be even. Each axis must be labeled with the variable. Table: | Tube | Known concentration (M) | Absorbance (AU) | |------|--------------------------|------------------| | 1 | 0.0 | 0.00 | | 2 | 0.1 | 0.01 | | 3 | 0.3 | 0.03 | | 4 | 0.7 | 0.07 | | 5 | 5.0 | 0.50 | The provided graph has the y-axis labeled 'Absorption' (range 0-0.3) and x-axis labeled 'Concentration' (range 0-5).
Correct Answer
A standard calibration curve with: 1. X-axis labeled: Concentration (M), scale from 0 to 5 with even intervals (e.g., 0,1,2,3,4,5) 2. Y-axis corrected to: Absorbance (AU), scale adjusted to 0 to 0.5 with even intervals (e.g., 0,0.1,0.2,0.3,0.4,0.5) 3. Plotted data points: (0.0, 0.00), (0.1, 0.01), (0.3, 0.03), (0.7, 0.07), (5.0, 0.50) 4. A straight line passing through all points and the origin (0,0)
