Ethanol is produced by the following reaction at atmospheric pressure: c2h4 (g) + h2o(g) = c2h5oh (1) the reactants enter the reactor at 250°c as an equimolar mixture (1 mol of each reactant), and liquid ethanol leaves the reactor at 332.8 k. how much heat needs to be removed from the reactor per mol of ethanol formed, if the reaction goes to completion? give your answer as a positive value, in kj to 1 decimal place. data given: enthalpy change for reactants from 523.15 k to 298.15 k = -20051) heats for formation for c2h4 (g), h20 (g) and c2h5oh (1) are 52510, -241,818 and -277,690 j/mol respectively. take r = 8.314j/mol-k. for ethanol, a, b and care 3.518, 0.02001 and -6.002 x 10 6 respectively in the following function: = a + bt + ct2

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.

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