8,2 For each of the following non-reactive equilibrium systems, determine the number of available degrees of freedom. (a) Two miscible materials in vapour-liquid equilibrium with vapour composition specified at a given temperature and pressure. (b) A mixture of methane and air in contact with a solid adsorbent at atmospheric pressure and a specified temperature. (c) Liquid water in equilibrium with a mixture of water vapour and nitrogen. nortiolly miscible liquid phases and a vapour phase in equilibrium with them at T.

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Units and Dimensions

Dimensions are the basic concepts of the measurement of quantities. Units are the means of expressing the dimensions. For instance, an area has a dimension of L2 and a unit of m2.