How much heat energy is needed to raise the temperature of a 150g sample of water from 283 Kto 349 Kif water has a Cp value of 4.18 J/g*K.

I’m too lazy to solve it but use q=mcAt (the ‘A’ is a delta symbol)

so you would set it up like:
q=150 • 4.18 • (349-283)

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.