An object sits at the bottom of a beaker as shown. assuming that the graduated cylinder was empty when the object was placed
in the beaker and that the beaker was full to the level of the spout, what must be true?

A. The volume of the water in the graduated cylinder is equal to the volume of the object.

Explanation:

The round object have a higher density than the water (because the objects sinks at the bottom at the beaker as seen in the picture) and will displace a volume of water equal to its own volume.  The water will fall from the beaker in the graduated cylinder where the volume may be read. In this scenario we  assume that the object will not react with the water.

Option A. The volume of the water in the graduated cylinder is equal to the volume of the object.

Explanation:

From Archimedes' principle, we understood that the volume displaced by an object when completely immersed in a liquid is exactly the same as the volume of the object.

From the diagram above, we can see that the ball displace a particular volume of the water into the graduated cylinder. The volume of the water in the graduated cylinder is the same as the volume of the ball as explained by Archimedes' principle.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.