Why is the specific heat of water 1 cal/g×°c?

The heat capacity of water is 1 cal/g/C degree, the heat capacity of ethanol is 0.58 cal/g/C degree, and the heat capacity of amonia is 1.23 cal/g/C degree. which of these molecules will increase it's tempreature first, if an equal amount of heat was added to an equal amount of substance at an equal rate?        (Amonia, Water, Ethanol)

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.