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19 Nov 2019

1. Find deltaE for this change in state
2. Find deltaH for this change in state
3. Find q for this change in State
4. Find w for this change in State

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Elin Hessel
Elin HesselLv2
21 May 2019

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Related questions

A 22.0 L volume of an ideal gas in a cylinder with a piston is at apressure of 3.0 atm. Enough weight is suddenly removed from thepiston to lower the external pressure to 1.5 atm. The gas thenexpands at constant temperature until its pressure is 1.5atm.

Find ?E for this change in state.
Find ?H for this change in state.
Find q for this change in state.
Find w for this change in state.


2 and 3

An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws governing gas behavior) occurs at a constant pressure of 50.0 atm and releases 60.4 kJ of heat. Before the reaction, the volume of the system was 7.80 L . After the reaction, the volume of the system was 2.80 L . Calculate the total internal energy change, ΔE, in kilojoules. Express your answer with the appropriate units. ΔE = -35.2 kJ SubmitHintsMy AnswersGive UpReview Part Correct Although the system absorbed some energy in the form of work, the significant release of heat caused the total change to be negative. State functions versus path functions The change in internal energy, ΔE, is a state function because it depends only on the initial and final states of the system, and not on the path of change. In contrast, q and w are path functions because they depend on the path of change and not just the initial and final states of the system.

Part C An ideal gas (which is is a hypothetical gas that conforms to the laws governing gas behavior) confined to a container with a massless piston at the top. (Figure 2) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 6.60 to 3.30 L . When the external pressure is increased to 2.50 atm, the gas further compresses from 3.30 to 2.64 L . In a separate experiment with the same initial conditions, a pressure of 2.50 atm was applied to the ideal gas, decreasing its volume from 6.60 to 2.64 L in one step. If the final temperature was the same for both processes, what is the difference between q for the two-step process and q for the one-step process in joules? Express your answer with the appropriate units.

please answer for Part C

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