Need answer for bubble time (aka #14) this is for forensics/science btw

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.

What is the chemical formula of magnesium bromide? a. mgbr2 b. mgbr c. mg2br2 d. mg2br