Answer:
Conditioning two or three times will insure that the concentration of titrant is not changed by a stray drop of water.
Explanation:
"Check the tip of the buret for an air bubble. To remove an air bubble, whack the side of the buret tip while solution is flowing".
It introduces a diverse array of bacteria, algae, and invertebrates to the closed marine environment and functions as a superior biological filter
pretty sure its B thank me later
Answer:
helium , krypton,xenon,radon, argon are noble gasses
They discovered that *elements* show increase in atomic numbers across the period.
