AAMC Chemical and Physical Foundations of Biological Systems (C/P) Full-Length (FL) 3 Practice Test

The method used to compute the mass of glucose in the experiment is based on the relationship between mass, volume, and concentration. When you know the concentration of a solution and the volume of a sample taken from that solution, you can calculate the mass of the solute (in this case, glucose) present in that volume.

The formula for calculating mass is:

\[ \text{Mass} = \text{Volume} \times \text{Concentration} \]

In this scenario, the volume of the glucose solution is given as 2 μL (which can be converted to a suitable unit such as liters if the concentration is in molarity), and the concentration of glucose is presumably provided. By multiplying the volume of the sample (in liters) by its concentration (in moles per liter), you derive the mass of glucose in grams or milligrams, depending on the units used.

This method effectively allows for the direct calculation of the amount of glucose present based on readily available parameters: the volume taken and the concentration of the solution. Such calculations are common in laboratory settings, where precision in determining amounts of solutes is crucial for experiments.