Final answer:
The volume of liquid in a 50 mL beaker cannot be directly measured using the beaker itself. A graduated cylinder or another measuring instrument is needed to accurately determine the volume of the liquid.
Step-by-step explanation:
The question is asking for the volume of liquid contained in a 50 mL beaker. In order to measure the volume of a liquid, a graduated cylinder is typically used. However, if a 50 mL beaker is being used instead, it is important to note that beakers usually do not have volume markings. Therefore, the volume of liquid in the beaker cannot be directly measured using the beaker itself. To determine the volume, one would need to transfer the liquid from the beaker to a graduated cylinder or use a different measuring instrument.