Respuesta :

Answer:

A hydrometer is an instrument used to determine specific gravity. It operates based on the Archimedes principle that a solid body displaces its own weight within a liquid in which it floats. Hydrometers can be divided into two general classes: liquids heavier than water and liquids lighter than water.

Explanation:

A hydrometer is an instrument used for measuring the relative density of liquids based on the concept of buoyancy.