A 200 Kg Piece of Lead at 40

question 6

Multiple Choice

A 2.00 kg piece of lead at 40.0°C is placed in a very large quantity of water at 10.0°C,and thermal equilibrium is eventually reached.Calculate the entropy change of the lead that occurs during this process.The specific heat of lead is 130 J/(kg • K) .

• A) -12.5 J/K
• B) 86.0 J/K
• C) -26.2 J/K
• D) -86.0 J/K
• E) -6.24 J/K

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Definitions:

IR Spectrum

A graphical display of infrared light absorption by molecules, useful for identifying functional groups and chemical bonds.

Bending Vibrations

Oscillations of atoms in a molecule about their equilibrium positions that change the angle between them without altering the molecule's bond lengths.

Spectrum

A range of values or conditions, often specifically pertaining to the distribution of energy emitted or absorbed by a substance, visible in bands of colors or intensities.

IR Spectroscopy

A technique used in analytical chemistry to identify molecular structure through the absorption of infrared radiation by molecules, leading to vibrational and rotational changes.