Explain why degree of freedom of ice water vapour system is invariant

1. (a) The system ice ºwater ºvapour has no degree of freedom (i.e., F = 0). The three phases of water i.e. ice, liquid water and vapour can exist together in equilibrium only at a particular-temperature and pressure...

they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

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