pls answer these questions for me!! pls :( I'm having a rlly stressful time and I need help. I'll give u 15 points.

In the analysis of hair and fiber samples, which does a compound comparison microscope allow for that a conventional compound microscope does not? a. simultaneous observation b. polarization c. fluorescence d. higher magnification

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

What does x represent in the formula for the compound xcl4?