What type of chemical reaction is happening here? 8fe + s8 --> 8fes

This is a synthesis reaction since you are taking two elements and creating one (opposite of decomposition).  I think this might also classify as a redox reaction as well since it appears as if iron is being oxidized and sulfur is being reduced (iron is loosing electrons while sulfur is gaining electrons).

I hope this helps.  Let me know if anything is unclear.

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.

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.