A Heat Engine Operates Between 200 K and 100 K

question 43

Multiple Choice

A heat engine operates between 200 K and 100 K.In each cycle it takes 100 J from the hot reservoir, loses 25 J to the cold reservoir, and does 75 J of work.This heat engine violates:

• A)both the first and second laws of thermodynamics
• B)the first law but not the second law of thermodynamics
• C)the second law but not the first law of thermodynamics
• D)neither the first law nor the second law of thermodynamics
• E)cannot answer without knowing the mechanical equivalent of heat

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Definitions:

Bicarbonate Ion

Anion (HCO3−) remaining after the dissociation of carbonic acid.

Plasma

The liquid component of blood, in which blood cells and other particles are suspended, consisting mostly of water, proteins, and other solutes.

Concentration

The abundance of a constituent divided by the total volume of a mixture.

Osmolality

Osmotic concentration of a solution; the number of moles of solute in 1 kg of water times the number of particles into which the solute dissociates.