The following thermodynamic data are available for octane, oxygen gas, carbon dioxide gas, water, and water vapor: molecule δh∘f (kj/mol) c8h18(l) −250.1 o2(g) 0 co2(g) −393.5 h2o(l) −285.8 h2o(g) −241.8 part b calculate δhrxn for the combustion of octane by using enthalpies of formation from the transition above. express the energy in kilojoules per mole to three significant figures. δhrxn δ h r x n = nothing kj/mol

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

What is the most common form of matter in the universe

Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.