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

How much heat is absorbed 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? 5 C(s) + 2 SO2(g) –> CS2(l) + 4 CO(g)   ΔH° = +239.9 kJ Hint: Convert from mass to moles of C(s) (dividing the mass by the molar mass of C), then multiply by the molar heat of reaction (239.9 kJ / 5 moles C). Group of answer choices178 kJ168 kJ148 kJ158 kJ

Which of the following reactions is endothermic in nature?Only one correct answerA.3MnO2(s) + 4Al(s) → 3Mn(l) + 2Al2O3(s)B.Ca(s) + 2H2O(l) → Ca(OH)2(aq) + H2(g)C.2NaHCO3(s) → Na2CO3(s) + H2O(g) + CO2(g)D.2NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2H2O(l)

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.

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

What type of chemical reaction is represented by the following equation: C(s) + O2(g) → CO2(g) accompanied by the release of heat?