Anna broke a test tube. She picked up the pieces of glass with one hand and placed them in her other hand. Once she picked up all of the pieces, she placed them in the garbage can. What was not done correctly? What
should have been done instead?

Technically she did nothing correctly. First of all an instructor should have been notified. Secondly it should of been swept up using the proper equipment like a broom or dustpan. Lastly the glass should have been disposed of in a glass disposal container. Technically the trash might be correct but some places now a days have an actual bin for broken glass.

And a) oxygen i believe

What’s the solution?