What is the The enthalpy change for the reaction: calcite › aragonite

16. Use enthalpies of formation given to determine the standard enthalpy of reaction for the following: ed oioege Al2O3 (s) +2 Fe 2 Al (s) + Fe2O3 (s) AH° =??? > AH°r(kJ/mol) -825.5 -1676 17. Use the enthalpies of formation and the enthalpy of reaction given below to determine the enthalpy of formation for solid CaC2. CaC2 (s) + 2 H2O (1) → Ca(OH)2 (s) + C2H2 (g) AH° =-127 kJ AH° (kJ/mol) ??? -286 -986 +227

28. Write the equation that corresponds to the standard enthalpy of formation for each of the following compounds: a) NaI(s), b) HC1O,(g), and c) CH;OCH;(g)

a thermometer placed in a solution is indergoing a chemical feactiom indicates an increase in temperature as ghe reaction proceeds is this reaction endothermic or exotjermic describe if heat energy is lost or gained crom ghr reaction the sustem go ghr durroundings what is the sign of ghe enghalpu cjainge

The reaction of CH3OH(g) with N2(g) to give HCN(g), NH3(g), and O2(g) requires 164 kJ/mol of CH3OH(g). Write a balanced chemical equation for this reaction. Include the phases of all species in the reaction.  How much heat is involved in the reaction of 65.0 g of CH3OH(g) with excess N2(g) to give HCN(g) and NH3(g) in this reaction?

29. (a) (b) (c) What is the definition of the specific heat of water? the amount of heat required to melt one mole of a substance at the melting point. the amount of heat required to vaporize one mole of a Kryptonite at the boiling point. the amount of heat required to raise the temperature of 1 gram of water by 1°C.