Multiple Select QuestionSelect all that applyWhich of the following reactions are exothermic? Choose all that apply.Multiple select question.CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(l)     ΔH = -213 kcal/molC6H12O6(s) → 2 C2H6O(l) + 2 CO2(g)     ΔH = -16 kcal/mol2 NH3(g) → 3 H2(g) + N2(g)      ΔH = +22.0 kcal/mol

Which of the following are exothermic reactions? 1(i) CaO + H2O  Ca(OH)2(ii) 2Pb(NO3)2Heat 2PbO + 4NO2 + O2(iii) CaCO3Heat CaO + CO2(iv) CH4 + 2O2  CO2 + 2H2O(A) (i) and (ii) (B) (ii) and (iii)(C) (i) and (iv) (D) (ii) and (iv)

Which of the following processes is/are exothermic?(1) I2(l) ⟶⟶ I2(s)(2) Cl(g) + e− ⟶⟶ Cl−(g)(3) Na(g) ⟶⟶ Na+(g) + e−(4) H(g) + Cl(g) ⟶⟶ HCl(g) (1), (2), and (3) (4) only (2) and (4) (1) and (3) (1), (2) and (4)

Which of the following is true for an exothermic reaction?Group of answer choicesHeat is taken in and ΔH is positiveHeat is taken in and ΔH is negativeHeat is given out and ΔH is positiveHeat is given out and ΔH is negative

Given the following reactions and their respective ∆H values:1. 2H₂(g) + O₂(g) → 2H₂O(l); ∆H = -572.3 kJ2. N₂(g) + 3H₂(g) → 2NH₃ (g); ∆H = -91.8 kJWhat is the ∆H for the reaction: N₂(g) + 3H₂(g) → 2NH₃ (g) + 2O₂(g)?Select one:a.-755.9 kJb.755.9 kJc.-664.1 kJd.664.1 kJ

When 0.250 mol of CH4(g) reacts with excess Cl2(g) at constant pressure according to the chemical equation shown below, 177 kJ of heat are released. Is this reaction endothermic or exothermic? 2 CH4(g) + 3 Cl2(g) –> 2 CHCl3(l) + 3 H2(g) Group of answer choicesexothermicendothermic