1. K reacts with HCl (hydrochloric acid) to produce KC1 (potassium chloride) and H2 (hydrogen gas). How much K (in grams) would you need to make 10 g of H2?​

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.

I'm sorry i cant you if you don't list the elements : (

Answer/nitrogen compounds in the soil;