Calculate the bond energy of c-c in c6h6 from the following information: C(graphite)c(g);∆H(atom)=715KJ
H2(g)H(g);∆H(atom)=218KJ
6C(graphite)+6H(g)--C6H6(l);∆H°f=49 KJ
(Given: B. E(C-H)=411KJ and B. E(C=C) of aromatic=602KJ)

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

Which is an example of an exothermic process?

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.