It’s b because if you’re running at 5 miles per second being a 100kg weight is the fastest
3750 seconds to travel that far
Formula unit is the empirical formula of an ionic or a covalent compound. It is the chemical formula that gives the proportions of the elements present in a certain compound however it does not give the actual numbers or the arrangement of the atoms. For this case, there are 14 atoms of different elements that is involved in the compound.