Calculate the value of AH° for the reaction C2H6 + 2 Cl2 - C2H4Cl2 + 2 HCl given the bond energies (kJ/mol):
Bond
Bond Energy
432 kJ/mol H-H
C-H 314 kJ/mol
H-CI 427 kJ/mol
C-C 347 kJ/mol
Cl-Cl 243 kJ/mol
339 kJ/mol C-Cl

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.

Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms