Answer:
if you are working with hazardous materials.
Explanation:
A properly operating and correctly used fume hood can reduce or eliminate exposure to volatile liquids, dusts, and mists. It is advisable to use a laboratory hood when working with all hazardous substances.
The answer to this problem is Beryllium is an alkaline earth metal.
Answer:
Hydrogen is the most explosive element
You can use a graduated cylinder.