Final answer:
To calculate the mass of the methanol sample, multiply the volume (26.9 mL) by the density (0.792 g/mL) to get the mass, which is 21.3168 grams.
Step-by-step explanation:
The student is asking how to calculate the mass of a sample of methanol using its density and the measured volume. To find the mass, one would multiply the volume of the methanol by its density. In this case, we have 26.9 mL of methanol, and the density is given as 0.792 g/mL. Using the formula mass = volume × density, the calculation would be:
Mass = 26.9 mL × 0.792 g/mL = 21.3168 grams
The correct answer is A. 21.3168 grams.