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EXERCISE (2%) INSTRUCTIONS: Read and answer correctly what is asked. Develop the next exercise without omitting formulas, calculations or unities. It will be checked according to the rubric. 1. Calculate the formation enthalpy of zinc oxide, from the next data: 2-300, AH",? 2zn Os a M,SO... b. H,SO. c.2. ZnO, 2n,50H0 AH-210K Z. Z.SH AH--335 KJ 0 240 BH=-571K . 2. A heat economizer is a closed heat exchanger. Octane is consumed in the boiler to heat 3 mº total of water, from room temperature. a. Develop and balance the octane combustion reaction. b. Calculate the heat amount generated by combustion (as a change in the standard formation enthalpy of the reaction). c. Calculate the water temperature at the economizer outlet Rubric. Complementary activity 6. (2 points) Successes 4 Score 100 75 50 Note: activity without answering, only the chemical equation balanced or not according to the topic it will be score as Unfulfilled U. The entire procedure will be reviewed, an answer will not be taken into account if there is no procedure and/or stoichiometric ratios.