Use the reaction to answer the question. CH4 + 2O2
CO2 + 2H20
H-C: 412 kJ/mol
O=O: 496 kJ/mol
C=O: 743 kJ/mol
0-H: 463 kJ/mol
What is the total energy of the reaction?
Hlep!!

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?