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?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.