Suppose You Add 45 J of Heat to a System

question 7

Multiple Choice

Suppose you add 45 J of heat to a system, let it do 10. J of expansion work, and then return the system to its initial state by cooling and compression. Which statement is true for this process?

• A) ΔH < ΔE
• B) ΔH = 70. J
• C) The work done in compressing the system must exactly equal the work done by the system in the expansion step.
• D) The change in the internal energy for this process is zero.

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Definitions:

Continuous Tube Feeding

The delivery of liquid nutrition through a tube directly into the stomach or intestine over 24 hours without interruption.

Stylet

A thin, flexible instrument inserted into or through a catheter or tube to maintain its shape during insertion.

Nasogastric (NG) Feeding Tube

A tube that is inserted through the nose down into the stomach, used for providing nutrition to patients unable to eat orally.

Radiograph

An image produced on a sensitive plate or film by X-rays, gamma rays, or similar radiation, used in medicine for diagnostic purposes.