How many moles of Na are needed to produce moles of NaCl in the reaction below
2 Na + Cl2-->> 2 NaCl

A. 2 moles
B. 8 moles
C. 1 mole
D. 4 moles

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.