WILL GIVE Why are the hard parts (bones, stems, seeds, etc.) of an organism mostly likely to form fossils?

(try to specify in easy word if you can)

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.

Can someone me with questions 15 to 17 plz.

What does the mass of 0.7891 mol of ferric oxide (fe2o3)