Final answer:
The mass percent by volume of a glucose solution with 256.6 g of glucose in 325 mL of solution is calculated using the mass/volume percent formula and is found to be 78.95%.
Step-by-step explanation:
To calculate the mass percent by volume of glucose in solution, we use the following formula:
Mass/Volume % (m/v) = (mass of solute in grams / volume of solution in milliliters) x 100%
Given the mass of glucose (C6H12O6) is 256.6 g, and the volume of the solution is 325 mL:
Mass/Volume % = (256.6 g / 325 mL) x 100%
This equation will yield the mass percent by volume of the glucose solution.
Now let's do the calculation:
Mass/Volume % = (256.6 / 325) x 100% = 78.95%
So, the mass percent by volume of glucose in the solution is 78.95%.