Which oxide produces the most acidic solution when 0.1 mol is added to 1 l of h2o?

Earth's rotation cause the global convention current between the equator and the poles

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 really not sure what’s the answer. sorry

The ratio is 3: 2. i.e. c.