What is the change in enthalpy when 1.50 moles of H₂ are reacted with an excess O₂ of according to the following balanced chemical reaction: X ADD FACTOR x( ) -381 2 H₂(g) + O₂(g) → 2 H₂O(l) ΔΗ = -572 2.02 KJ ANSWER mol H₂ g H₂ RESET 5

q eq req Creq Use the References to access important values if needed for this question. When CO₂(g) reacts with H₂(g) according to the following reaction, 23.3 kJ of energy are absorbed for each mole of CO₂(g) that reacts. Complete the following thermochemical equation. 2CO2(g) + 5H₂(g) →C₂H₂(g) + 4H₂O(g) ΔΗ = An error has been detected in your answer. Check for typos, miscalculations etc. before submitting your answer. Submit Answer Retry Entire Group 9 more group attempts remaining kj Previous Next> Save and Exit

The following thermochemical equation is for the reaction of HBr(g) to form H₂ (g) and Br2 (1). 2HBr(g) → H₂(g) + Br2 (1) AH 72.6 kJ How many grams of HBr(g) would be made to react if 11.2 kJ of energy were provided? grams =

The following thermochemical equation is for the reaction of carbon dioxide(g) with hydrogen(g) to form acetylene(g) (C,H) and water(g). 2C02(g) + 5H2(g)–C,H2(g) + 4H,O(g) AH = 46.5 kJ When 15.3 grams of carbon dioxide(g) react with excess hydrogen(g), kJ of energy are | Hint: An amount of energy is expressed as a positive number. The sign of AH in the thermochemical equation indicates whether the energy is absorbed or evolved.

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The combustion of propane is represented by the following reaction: C3H8le) 50 2(e) 3CO 2(g) 4H2O(g) 2043 kJ If 175 grams of propane react, how many kilojoules of heat will be released? 357,525 kJ 8,126 kJ 71,505 kJ 3.77 kJ

What mass of barium metal will be consumed when 625 kJ of heat s produced. Go to 3 sig figs and do not use scientific notation  2Ba(s) + O2(g) = 2BaO(s).     Delta H = -1107 kJ

Carbon disulfide reacts with chlorine according to the following reaction equation: CS2(g) + 3 Cl2(g) S2 Cl2(g) + CCI4(g) kJ A,H° = -230 mol If 15.0 g of Cl2 (70.906 g/mol) reacts with excess CS2, how much heat is transferred (include any sign needed) for this reaction? Give your answer in kJ but do not put units in the answer box. Report it to two decimal places.