Find the numberof moles in 60 grams of so3

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

In 2002, the rare earth elements mine in mountain pass, california was closed because

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d