Using the balanced chemical equation CaCl2(aq) - K2CO3(aq) -- CaCO3(s) + 2Cl(09)
determine the concentration of a calcium chloride solution if 20.0 mL reacts with excess aqueous potassium carbonate to form 10.09
of solid calcium carbonate,

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.

Your question is not clear but if you can explain yourself i would be glad to .  just trying to : ))

Hello.the answer is  hydrosphere, geosphere, and biosphere  have a nice day