You may have seen the statement made that the liquid state is the stable state of water below 100°C (but above 0°C), whereas the vapor state is the stable state above 100°C. Yet you also know that a pan of water set out on a table at 20°C will probably evaporate completely in a few days, in which case, liquid water has changed to the vapor state. Explain what is happening here. What is wrong with the simple statement given at the beginning of this problem? Give a better statement.