A sample of 51.0 g of ammonia was reacted with excess copper oxide. How many moles of nitrogen would be produced? 2NH₃ (g) + 3CuO (s) → 3Cu (s) + 3H₂O (l) + N₂ (g)
A.
1.0 mole
B.
1.5 mole
C.
2.0 mole
D.
2.5 mole

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.