Multiple ChoiceAn unknown gas expands in a container increasing the volume from 4.3 L to 8.2 L at a constant pressure of 931 mmHg. Calculate the internal energy of the system if the system absorbs 2.3 kJ of energy. 1008views5rank4comments
Multiple ChoiceA gas reaction is allowed to take place in a canister while submerged in water at a temperature of 25oC. The gas expands and does P-V work on the surroundings equal to 385 J. At the same time, the temperature of the water decreases to 20oC as the energy in the gas reaction reaches 364 J. What is the change in energy of the system? 841views2rank1comments
Multiple ChoiceWhich of the following processes must always result in a net increase in internal energy of the system?419views
Open QuestionWhich statement is true of the internal energy of a system and its surroundings during an energy exchange with a negative δusys ?321views
Open QuestionDoes a change in energy always indicate that a chemical reaction has taken place?211views
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