Part A: Exothermic and Endothermic Reactions: NHẠNO3 Solution CaCl2 Solution b. Initial water temperature (°C) 22°C 22°C Final water temperature (°C) 19 °C 24 C Temperature change -3 °C 2° C Endothermic or Exothermic Endo thermic Exothermic Add the term heat to the reactants or products in the following chemical equations. H2O NH,NO; (s) NH,* (aq) + NO;°(aq) H20 CaCl, (s) Ca+ (aq) + 2C1 (aq) Q 1: Use the knowledge you attained from the above activity and answer the following. Indicate the process that absorb energy with a positive sign (+, endothermic) and the process that releases energy with a negative sign (-, exothermic). Process Sign (+ or-) Exothermic or Endothermic Freezing water Cooking a potato in a microwave oven Burning wood log in a fireplace Digestion of food inside the body Photosynthesis

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A: Reaction given 2NH4Cl(s) +Ba(OH)2 ⋅8H2O(s)→2NH3 (aq) +BaCl2 (aq) +10H2O(l) ∆H(reaction) = 54.8 kJ…

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Q: The evaporation of water is endothermic:         H2O(l)  + 44.01 kJ   -------->   H2O(g)       If…

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Q: Consider the reaction: 2Al2O3 (s) yields 3O2 (g) delta H = 3351.5 kJ  A) what is the heat formation…

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Q: How much energy in kJ is released in burning 1.83 mL of gasoline (assuming that all of it is octane…

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Q: Only question7 plz

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Q: Which one of the equations below is an endothermic reaction? A) SrO (s) + CO2 (g) → SrCO3 (s)AH° =…

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Q: 3. one mole of 15% sulfuric acid is neutralized by 10% sodium hydroxide according to the following…

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Q: 9. Calculate AH for the reaction 4NH3 (g) + 502 (g) → 4NO (g) + 6H20 (g), from the following data.…

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Q: A solid is dissolved in a coffee cup calorimeter. Which of the observations suggest that the process…

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Q: 3 A +2 BZ? 6C A = 156.3 g/mol B =862 91mol C = 381.2 gimo) AH= -695.7 kcal /mol %3D molar mass *…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Based on the following reactions: Rxn A: C{s) + O2(g) → CO2 (g) AHc = -393.5 kJ/mole Rxn B: C8H18()…

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Q: Using the equations N2 (g) + 3 H2 (g) → 2 NH3 (g)AH° = -91.8 kJ/mol C(s) + 2 H2 (g) → CH4 (g) AH° =…

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Q: ormation to answer Questions 6-9: A sample of NH4NO3 with a mass of 5.0 g is dissolved in 40.1 g of…

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Q: 8CO2(g) + S13N4(s) AH = +461.05 kJ 8CO + 2N20 + 3SIO2 a) Is this reaction exothermic or endothermic?…

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Q: Based on the following reactions: Rxn A: C{s) + O2(g) → CO2 (g) AH°C = -393.5 kJ/mole Rxn B: C3H18()…

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Q: +3 CO(g) 2 Fe(s) + 3 CO2(g) 3 02(g) → 2 Fe203(s) AH = -1648 kJ → 2 CO(g) + 02(g) AH= +565.4 kJ

A: (1) 4Fe + 3O2----> 2Fe2O3, □H = -1648 kJ (2) 2CO2 ----> 2CO + O2, □H = +565.4 kJ (3) Fe2O3 +…

Q: Consider the following reaction:   2 CH3OH(g) → 2 CH4(g) + O2(g)                    DH = 252.8 kJ…

A: NOTE : Since you've posted multiple sub-parts,we'll solve first three sub-parts for you. If you want…

Q: 2. Calculate AH for the reaction 4 NH3 (g) + 5 O2 (g) → 4 NO (g)+6 H2O (g), from the following data…

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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.