A student using the following key to model the chemical equation provide please help this is due in an hour

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

What does a numerical subscript following an element in a chemical formula mean?

#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.