One can buy and use naturally rare isotopes in chemistry. You can buy a copy of
sodium hydroxide, where the oxygen atoms have 8 protons and 10 neutrons in its atomic nucleus. This
is denoted Na18OH. The most abundant isotope of oxygen by far has 8 protons and 8 neutrons in it
atomic nucleus and is designated 16O or simply O.
How would you do the following transformation using Na18OH? Several steps may be required.