A studerit runs two experiments with a constant-volume "bomb" calorimeter containing 1500. g of water (see sketch at rignt). thermeter First, a 7,500 g tablet of benzoic acid (C,H,CO.H)is put into the "bomb" and burned completely in an excess of oxygen., (Benzoic acid is known to have a heat of combustion of 26.454 kJ/8.) The temperature of the water is observed to nse from 16.00 C to 45.39 °C over a time of 64 minutes. Water invulation Next, 5.000 g of acetaldehyde (C,H,O) are put into the "bomb" and similarly completely burned in an excess of oxygen. This time the temperature of the water rises from 16.00 °C to 33.64 "C. (2) thimical reaca A "bomb" calorimeter. Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below about this reaction: 2C,H,0(g) + 50() -- 4CO,(g) + 4H,0(g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student dit not do these exeriments sufficiently carefuly, and the values you calculate may not exactly match published values for this reaction O exothermic Is this reaction exothermic, endothermic, or neither? O endothermic Oneither If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in the second experiment, Calculate the reaction enthalpy Ala per mole of CO. mol Explanation Check

9. A 40.0 kg industrial calorimeter has an overall specific heat capacity of 1.00 J/ (g°C). Complete combustion of 1.00 g of hydrogen in this calorimeter causes a temperature increase of 3.54°C. Calculate the molar enthalpy of combustion for hydrogen from this evidence. (-286 kJ/mol)

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Please help me solve this question, i keep getting it wrong everytime