Methanol (CH3OH) may be formed according to the reaction below: H CE0 + 2H23) > H-Ç-0-Hg) (g) H Determine the AH of the reaction given the following average bond energies (kJ/mol): C-o 358 C=0 799 CEO 1072 C-H 413 H-H 436 O-H 463 Calculate the standard molar enthalpy of formation of nitrogen monoxide, NO, given the following thermochemical equations: N2g)+ 3H2G} → 2NH3g) AH = -91.8 kJ 4NH39) + 502g)→ 4NO() + 6H20(g) AH = -906.2 kJ H2íg) + ½02ig) → H2O(g} AH = -241.8 kJ Select one: O a. -76.6 kJ оБ. 90.2 kJ O c. -756.2 kJ O d. 107.1 kJ Consider the formation of lithium nitride from lithium and nitrogen: 6 Li + N2 +2 Li3N How much Li (molar mass: 6.94 g/mol) is needed to produce 2.00 kg LigN (molar mass: 34.83 g/mol) if the percent yield of the process is 70.5%? Select one: O a. 0.565 kg Li O b. 0.188 kg Li Oc. 1.70 kg Li O d. 0.843 kg Li
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Hi! I need answers on letters A to C. Thank u in advance!
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