1.00 l of a gas at standard temperature and pressure is compressed to 473 ml. what is the new pressure of the gas?

We know that for an ideal gas:
PV = constant

1000 ml x 1 atm = 473 ml x P atm
P = 2.11 atm

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.