Piedras clavos y agua es heterogénea o homogénea que alguien me ayude por favor

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

What type of matter is made of only one kind of atom

The sum of the oxidation numbers in a neutral compound is always