Question

when determining the density of acetone, you measure out several aliquots of acetone using either a graduated cylinder or volumetric pipet and add them sequentially to a 50 ml beaker. after each addition, you weigh the beaker and its contents. what is the volume of each aliquot of acetone added to the 50 ml beaker?
volume: 10
incorrect answer
ml

Explanation:

Step1: Recall typical aliquot volumes in density experiments

In experiments to determine density, when using a 50 mL beaker and adding aliquots sequentially, a common aliquot volume (especially when using volumetric pipets or graduated cylinders for such setups) is 5 mL. This is because adding multiple 5 - mL aliquots (e.g., 5, 10, 15, 20, 25 mL total) to a 50 mL beaker is a standard procedure to get multiple data points for mass - volume relationships. The previous answer of 10 mL might be incorrect if the standard procedure here uses 5 mL aliquots.

Step2: Confirm the typical aliquot volume

For a 50 mL beaker, adding 5 - mL aliquots makes sense as it allows for up to 10 additions (but usually 5 or so to get a good range) without exceeding the beaker's capacity. So the volume of each aliquot is likely 5 mL.

Answer:

5