When 31.0 g of acetylene reacts with hydrogen, 22.0 g of ethane is produced. What is the percent yield of C2H6 for the reaction? C2H2(g) + 2H2(g) → C2H6(g)

#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.