What is the chemical formula of tetraselenium tetranitride?

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

In which phase(s) do the molecules take the shape of the container?

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