Examine the reaction equation below. "Heat" being present on the reactant side of an equation indicates what? "Heat" + 2NH3  N2 + 3H2

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1. Determine the Gibbs free energy of reaction for the process of photosynthesis at 298 K 6CO2 (g) + 6H₂O (1)→ C6H12O6 + 602 (g) Indicate if the process is spontaneous or non-spontaneous. The standard Gibbs energies of formation can be found below. Compound CO₂ (g) O₂ (g) H₂O (1) C6H12O6 Spontaneous or non-spontaneous? AGF (kJ/mol) at T = 298 K (kJ/mol) -394.36 0 -237.13 -910

Which of the following statements is TRUE regarding the spontaneity of the exothermic reaction listed below? 2 Na(s) + Clzlg) → 2 NaCi(s) The reaction is spontaneous as written only at high temperatures. O The reaction is spontaneous as written only at low termperatures. O There is not enough information provided to determine the spontaneity of the reaction. O The reaction is nonspontaneous as written at all temperatures. O The reaction is spontaneous as written at all temperatures. Question 19 Consider the following chemical reaction for the combustion of hydrogen gas: 2 H2lg) + Ozlg) 2 H2Olg) AHn = -483.6 kJ; ASan = -89.0 J/K Exn %3! What is the equilibrium constant for the reaction at 873.15 K? O 5.22 x 10-25 O 1.06 O 3.81 - 10 O 192 * 104 O 263 - 104