Which plot below best represents the relationship between volume (V) and number of mol (n) of an ideal gas at constant pressure and temperature, as expressed by the ideal gas law, PV=nRT? (2) Select one: v VI Consider the following decomposition reaction of hydrogen peroxide, H₂O₂, and associated thermodynamic data at 25° C: (C) 2 H₂O2(1)→ 2 H₂0 (1) + O2(g) A,H* = -200 kJ/mol Indicate which statement best describes the thermochemistry of this reaction: Select one: It is endothermic, and will absorb heat from the surroundings. It is exothermic, and will absorb heat from the surroundings It is endothermic, and will release heat to the surroundings It is exothermic, and will release heat to the surroundings It is euphoric, and reacts happily whatever the surroundings. n n The diagram below represents vessels I, II, III of the same volume and held at the same temperature, but containing different numbers of helium (He) and nitrogen (N₂) gas molecules. Key: 00 N, He (II) (III) Assuming ideal gas behaviour, state which one or more of the three vessels have The highest partial pressure of helium ✓ Choose... II The lowest total pressure | = || = ||| I I and II The highest total pressure Choose

Which plot below best represents the relationship between volume (V) and number of mol (n) of an ideal gas at constant pressure and temperature, as expressed by the ideal gas law, PV=nRT? (2) Select one: v VI Consider the following decomposition reaction of hydrogen peroxide, H₂O₂, and associated thermodynamic data at 25° C: (C) 2 H₂O2(1)→ 2 H₂0 (1) + O2(g) A,H* = -200 kJ/mol Indicate which statement best describes the thermochemistry of this reaction: Select one: It is endothermic, and will absorb heat from the surroundings. It is exothermic, and will absorb heat from the surroundings It is endothermic, and will release heat to the surroundings It is exothermic, and will release heat to the surroundings It is euphoric, and reacts happily whatever the surroundings. n n The diagram below represents vessels I, II, III of the same volume and held at the same temperature, but containing different numbers of helium (He) and nitrogen (N₂) gas molecules. Key: 00 N, He (II) (III) Assuming ideal gas behaviour, state which one or more of the three vessels have The highest partial pressure of helium ✓ Choose... II The lowest total pressure | = || = ||| I I and II The highest total pressure Choose

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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