PLEASE HELP ASA1 Electric Energy Net Generation by Resource (as of 2007)

Resource Percentage

coal 48.5

natural gas 21.6

uranium 19.4

hydroelectric 5.8

petroleum 1.6

biomass about 1.0

geothermal <1.0

solar and other <1.0

wind <1.0

other gases 0.3

What percentage of energy generation is produced by fossil fuels?

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.