combustion CH (9) + 2O2(g) CO2(g) + 2 H2O(9) fixed piston moveable piston cylinder cylinder CH4 + 2 O CH4 + 202 * fixed! JHE piston moves CO2 + 2 H20 CO2 + 2 H2O +g + } Imagine burning a specific quantity of methane, CH4, in a cylinder in the presence of oxygen. The reaction is exothermic, and during and after combustion, heat will flow out of the chemical reaction/cylinder system, (-9 for the system and + for the surroundings) until the system and the surroundings reach the same temperature. Imagine doing this in two different cylinders, one with a movable piston and one with a fixed piston. If you were to measure q (either the + or the-q, it wouldn't matter since they have the same magnitude although opposite signs), you would find that they are different for the 2 cylinder situations, since no work was done when the piston is fixed whereas work is done when the piston moves. In which of these two situations, fixed or movable piston, is the same as the change in enthalpy, AH? The q for the fixed piston situation is equal to AH. The q for the movable piston situation is equal to AH. 1 point possible (graded) Cp 0.386 J/g.C Cp 0.461 J/g.C Cu Fe Given the list of options, select the correct answer to this question. Two blocks of copper (Cu) and iron (Fe) of identical mass are heated so that each receives exactly the same amount of heat transfer (+9). Given the specific heat capacities of copper (0.386 J/g. C) and iron (0.461 J/g. "C), which block will be at the higher temperature after the heating process? Assume that no heat is lost to the surroundings. Copper O Iron Submit You have used 0 of 1 attempt Save Problem 10 1 point possible (graded)