4 HNO3(aq) + 5 N₂H₂(1) → 7 N₂(g) + 12 H₂O(g) AH = =- 74. Which statement is correct for the reaction above? a. 205.2 kJ are absorbed per mole of H₂O(g) used. ne b. 351.7 kJ are absorbed per mole N₂(g) formed. c. 615.5 kJ are released per mole of HNO3(aq) used. 2462.0 kJ

Which equation is correct for the formation reaction of nitric acid, HNO3? A) N₂(g) + H₂(g) + 30₂(g) → 2HNO3(aq) ΔΗ = 174 kJ B) N₂(g) + H₂(g) + 30₂(g) → 2HNO3(0) AH = -174 kJ C) NH3(g) + N₂(g) + 30₂(g) → 3HNO3(aq) D) 1/2N₂(g) + 1/2H₂(g) + 3/20₂(g) → HNO3(/) 1 E) N₂(g) + H₂(g) + O₂(g) → HNO3(/) ΔΗ = 174 kJ ΔΗ = -174 kJ ΔΗ = -174 kJ

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Please help me complete this question

Consider the following reaction.  N2 + 3 H2 -> 2 NH3        ΔH = -92 kJ/mol If 35 g of NH3 are produced, then what amount of heat energy is released?

C & D please answer

59.) Gasohol is gasoline mixed with ethanol (C2H5OH). If 0.230 g of ethanol produces 7.24 kJ of energy when burned, what would be the AH for the combustion of one mole of ethanol?

When 3.8 g A are reacted with 8.5 g D,  according to the balanced chemical equation below, 33 kJ of energy are released.  Please calculate the enthalpy for this reaction when 3 moles of G are produced.  2A + 3D = 2Z + 3G  given molar masses: A = 141.8 g/mole D = 63.996 g/ mole Z = 4.032 g/ mole G = 56.028 g/ mole

Consider these reactions: Reaction 1: H2(g) + Cl2(g) 2HCl(9) AH = -184.6 kJ Reaction 2: 20F2(g) → O2(g) +2F2(g) AH=-49.4 kJ Reaction 3: Na (g) +202 (9) 2NO2(g) AH = +66.4 kJ Use Reaction 1. Determine the mass, in grams, of chlorine gas consumed (with excess H₂) when 1,409.0 kJ of energy is released from the system. Round to the nearest whole number .

In order to break water into hydrogen and oxygen, water is heated to more than 500°C. Which kind of reaction is this and why? It is exothermic because heat needs to be released by the reactants to form the products. It is endothermic because heat needs to be released by the reactants to form the products It is exothermic because heat needs to be absorbed by the reactants to form the products. It is endothermic because heat needs to be absorbed by the reactants to form the products.