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

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. Calculate the value of ΔH for this reaction, as written. 2 CH4(g) + 3 Cl2(g) –> 2 CHCl3(l) + 3 H2(g) Group of answer choices-1616 kJ-1716 kJ-1516 kJ-1416 kJ

When 42 g of C(s) reacts in the presence of excess SO2(g) to produce CS2(l) and CO(g) according to the following chemical equation, is the reaction endothermic or exothermic? 5 C(s) + 2 SO2(g) –> CS2(l) + 4 CO(g)   ΔH° = +239.9 kJGroup of answer choicesendothermicexothermic

Which process is endothermic?A.     CH4(g)+2O2(g)→CO2(g)+2H2O(g)B.     HCl(aq)+NaOH(aq)→NaCl(aq)+H2O(l)C.     CaCO3(s)→CaO(s)+CO2(g)D.

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

ΔH for the following reaction is -180 kJ. Is this reaction endothermic or exothermic? 2 Na(s) + 2 H2O(l) –> 2 NaOH(aq) + H2(g) Group of answer choicesexothermicendothermic