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First Law of Thermodynamics

Q. The circles below represent a phase change occurring at constant temperature. Is the value of each of the following positive (+), negative (−), zero (0), or impossible to determine from the given information?

Solved • Oct 13, 2019

First Law of Thermodynamics

Q. 2. When you add NaCl to water, all the solute dissolves and the temperature decreases, what does that allow you to say about: b. ΔH for solution

Solved • Sep 13, 2019

First Law of Thermodynamics

Q. Which statement would be a correct interpretation of the First Law of Thermodynamics?

Solved • Sep 7, 2019

First Law of Thermodynamics

Q. For a certain reaction at constant pressure, ΔU = -65 kJ, and 49 kJ of expansion work is done by the system. What is ΔH for this process? Answer in units of kJ.

Solved • Sep 7, 2019

First Law of Thermodynamics

Q. E represents the internal energy, defined as U in class. The pressure-volume work done by an ideal gaseous system at constant volume is

Solved • Sep 7, 2019

First Law of Thermodynamics

Q. I the Phet simulation window, click on the Ënergy Symbols" box in the upper right. Perform the described tasks and fill in the blanks with the appropriate terms. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete submitting your answer.

Solved • Aug 28, 2019

First Law of Thermodynamics

Q. For a change in a system that takes place at constant pressure, which of the following expressions is correct? (A) ∆H = ∆U (B) ∆H = qp − p∆V (C) ∆H = ∆U − qp (D) ∆H = qp (E) ∆H = qv

Solved • Jun 25, 2019