Acid Sorry if I am wrong but I am pretty positive it’s acid
        
             
        
        
        
I believe the correct answer from the choices listed above is the third option. It is amino acid that is not an example of a polymer. It <span> is a large molecule, or macromolecule, composed of many repeated subunits. Hope this answers the question.</span>
        
             
        
        
        
Answer:  [Ne] 3s¹ sodium electron configuration
 
        
             
        
        
        
The correct answer is b, 18 protons
        
                    
             
        
        
        
n(2Fe2O3)=10g/319.374amu=0.03mol
n(4Fe+3O2)=0.03 mol
m(4Fe+2O2)=Mn=319.374×0.03=9.58=10