kJH2(g) + 0.502(g) → H₂O(g) AH-241.8-AS-44.5 J-mol¯-K-¹molSo, mol¹KIהחומר???H₂O(®)130.7H2(g)205.202(g)

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Answered: kJ H2(g) + 0.502(g) → H₂O(g) AH-241.8-…

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter4: Stoichiometry

Section: Chapter Questions

Problem 4.61PAE: 4.61 What is actually measured by the octane ratings of different grades of gasoline?

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Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes, reacts with oxygen to give brown NO2 gas. 2 NO(g) + O2(g) NO2(g)rH = 114.1 kJ/mol-rxn Is this reaction endothermic or exothermic? What is the enthalpy change if 1.25 g of NO is converted completely to NO2?
4.61 What is actually measured by the octane ratings of different grades of gasoline?
The equation for the fermentation of glucose to alcohol and carbon dioxide is: C6H12O6(aq) 2C2H5OH(aq) + 2CO2(g) The enthalpy change for the reaction is 67 kJ. Is this reaction exothermic or endothermic? Is energy, in the form of heat, absorbed or evolved as the reaction occurs?
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In a coffee-cup calorimeter, 110.0 mL of 1.2 M NaOH and 110.0 mL of 1.2 M HCl are mixed. Both solutions were originally at 22.5°C. After the reaction, the final temperature is 30.5°C. Assuming that all the solutions have a density of 1.0 g/cm³ and a specific heat capacity of 4.18 J/°C.g, calculate the enthalpy change for the neutralization of HCl by NaOH. Assume that no heat is lost to the surroundings or to the calorimeter. AH = 0.182 kJ/mol
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kJ H2(g) + 0.502(g) → H₂O(g) AH-241.8- AS-44.5 J-mol¯-K-¹ mol So, mol¹KI החומר ??? H₂O(®) 130.7 H2(g) 205.2 02(g)