Mass=40g
volume=20mL
what is the density

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

Compare and contrast the bohr model and the electron cloud models of the atom.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table