A scientist studies the bond energies of different compounds containing nitrogen (N). The scientist observes that the N-N bonds in one group of compounds have a bond energy of 209 kJ/mol, while the N-N bonds in another group of compounds have a bond energy of 418 kJ/mol. In one or two sentences,postulate a reason for this difference.
1-736 kJ
2-The reaction is exothermic because the total bond energy of the reactants is less than the total bond energy of the products.
3-liquid contents of the glass containers
4-It is endothermic because heat needs to be absorbed by the reactants to form the products.
5-the amount of released or absorbed energy
6-The reactants would appear at a lower energy state than the products.
7-provides the activation energy for the reaction.
8-The formation of the products releases bond energy, and this energy is less than the energy that is absorbed by the reactants.
9-Four C–H, one C=C, and three O=O bonds need to break up. Four C=O and four O–H bonds need to form.
10-energy required to break a chemical bond
11-decreasing activation energy
12-It is endothermic because heat from the surroundings has to be absorbed by the water in order to change states.
13-The flame from the burner provides the energy to perform the reaction. The reaction is exothermic.
14-more collisions between molecules
15-Faster molecules have more energy than slower molecules.
16-The total chemical potential energy of the reactants is greater than the total chemical potential energy of the products.
chem test