Final answer:
In medicine, sodium chloride is used in intravenous saline solutions, and barium sulfate serves as a radiocontrast agent for imaging studies.
Step-by-step explanation:
In the context of modern medicine, certain chemicals are widely utilized for their various therapeutic properties. Among the options presented, sodium chloride (NaCl) and barium sulfate (BaSO4) are two compounds that find use in medical applications.
Sodium chloride, commonly known as table salt, is used in medicine primarily as a component of intravenous saline solutions. These saline solutions are critical for hydration therapy and are used to administer drugs or to help maintain blood pressure during surgical procedures. On the other hand, barium sulfate is used as a radiocontrast agent for imaging studies, such as X-rays and CT scans, to improve the visibility of the gastrointestinal tract.