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Describe how and why formal charges are used to choose between two possible Lewis structures for a molecule.
Residual Volume
Volume of air remaining in the lungs after a maximum expiratory effort.
Inspiratory Reserve Volume
The amount of air that can be forcibly inhaled after a normal inspiration, reflecting the capacity for additional air intake beyond the typical tidal volume.
Respiratory Membrane
A thin boundary comprising the alveolar and capillary walls where gas exchange between air and blood takes place in the lungs.
Diffusion
The movement of molecules or particles from regions of higher concentration to regions of lower concentration.
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