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Calculate the theoretical maximum efficiency of a heat engine operating between 373 K and 173K.

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When washing soda is heated below 373 K, it forms:-

Above 373 K , washing soda changes to a white power called ________.

A beaker containing water at 373 K is representig an open system, is placed in the room. Predict the nature of work done.

The scale on which ice point is taken as 273K and steam point is taken as 373K.

Calculatte the molal elevation constant of water if molar enthalpy of vapourisation of water at 373K is 40.585 kJ mol^(-1) .