How do I find the average air temperature in an enclosed air system with outer room temperature?

Hydrogen is the most abundant element on the periodic table..hope it .

They are like other investigations? say there was a murder u have to do blood test and finger prints which run through a lab. 

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.