What is a very long molecule that has chemicals in a special order?

It will be a polymer

A polymer is a macromolecule which is obtained by repetitive combination of small molecules known as monomers.

When these monomers are combined in repetitive manner they form a long chain of small monomers or a very long molecule

Now in case of polymer also there is formation of bond between monomers which is possible only if they combine in a definite or special order.

Now here the answer can be very specific like

a) bio polymer : example : DNA , RNA , Protein, starch, cellulose

b) synthetic polymer: polyethylene, PVC

your answer would be a. 12.5 kg

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i