Question

a device used to separate fresh water from salt water using heat is called a(n) __________
multiple choice
osmometer
dialysis machine
still
ion exchange column
salt fountain

Explanation:

A still uses heat to evaporate water from a solution (like salt - water), and then condenses the water vapor back into liquid fresh water, separating it from the salt. An osmometer measures osmotic pressure, a dialysis machine is used for filtering blood, an ion - exchange column exchanges ions in a solution, and a salt fountain is not related to separating fresh water from salt water using heat.

Answer:

C. still