Is sodium a mixure or substance

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

How can one make a supersaturated solution? (apex)