The Enthalpy of Vaporization of Ammonia at Its Normal Boiling $\degree$

question 117

Multiple Choice

The enthalpy of vaporization of ammonia at its normal boiling point,-33.34 $\degree$ C, is approximately 23.35 kJ/mol.What is the entropy change in the surroundings when one mole of liquid ammonia vaporizes at -33.34 $\degree$ C in a large room maintained at a temperature of 25.0 $\degree$ C?

• A)(-2.40 *102 J/K)
• B)(-78.3 J/K)
• C)(-19.1 J/K)
• D)(+78.3 J/K)
• E)(+2.40 * 10² J/K)

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Photoreceptor cells in the retina of the eye that are responsible for color vision and function best in relatively bright light.

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