How many moles are there in 7.50 x 10^23 atoms of iron?

1.25 mol

Explanation:

1 mol 6.02*`0^23 atoms

7.50*10^23 atoms * 1 mol/6.02*10^23 atoms = 1.25 mol

odds are decent that your handwriting right now looks a little bit different than it did five years ago, and will look different again in five more. when i look back through my notebooks from middle school to now, i see a long, slow progression from meticulous and teeny letters to bigger, sloppier ones, plus a few side detours: sometime in high school, for example, i decided those loopy cursive lowercase f’s were just the coolest, adopting them as the lone rep for cursive in my otherwise all-print handwriting.

explanation:

the atomic mass is the bottom number on the element.

-steel jelly