Question

Iron density= 7.8gm/cm3 floats on mercury density= 13.6gm/cm3 whereas gold density= 19.1gm/cm3 sinks in mercury. Explain.

Answer 1

Answer:

At First, let's learn about floatation and sinking.

Floatation is the state of a body in which a body stays above or partially above the surface of the liquid. Sinking is the state of a body in which a body goes at the bottom of the liquid when dipped inside it.

A body floats on the surface only if the density of that body is less than the density of the surface. If happens otherwise, the object will sink.

The iron (7.8 g/cc) floats on mercury (13.6 g/cc) because of the above reason and gold (19.1 g/cc) sinks in mercury because of also the above reason.

Hope this helps.