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. 951views5rank4comments
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? 789views2rank1comments
Multiple ChoiceWhich of the following processes must always result in a net increase in internal energy of the system?390views
Open QuestionWhich statement is true of the internal energy of a system and its surroundings during an energy exchange with a negative δusys ?282views
Open QuestionDoes a change in energy always indicate that a chemical reaction has taken place?169views
Open QuestionA system goes from one state to another by two different paths. For Path 1, the system does 140 J of work on the surroundings, and its internal energy increases by 330 J. For Path 2, the system absorbs 220 J of heat from the surroundings.a. What is the value of q for Path 1?b. What is the value of w for Path 2?
Open QuestionA system goes from State A to State B by two different paths: Path 1, for which 𝑞1=38 kJ and 𝑤1=−97 kJ, and Path 2, for which 𝑞2=−28 kJ.a. What is the value of Δ𝐸 for Path 1?b. What is the value of w for Path 2?
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