1. Adjustment knob
2.arm
3. Diaphram
4. Base
5. Light source
6. Tube
7. Stage clips
8. Objectives
9. revolving nose piece
10. eye piece
11. Stage
V=0,1 l=100 ml
m=p*V=0,8787*100=87,87g
Answer:
The atoms of different elements have different numbers of protons and electrons.