From the following data, calculate the average bond enthalpy for the N-H bond: NH3(g) → NH2(g) + H(g) ΔH
o
= 435 kJ/mol
NH2(g) → NH(g) + H(g) ΔH
o
= 381 kJ/mol
NH(g) → N(g) + H(g) ΔH
o
= 3.60 × 102 kJ/mol

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

What are the 4 phases of matter in order of increasing engery content?

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.