Assuming an extraction allows 95% of a desired product to partition into the organic phase, why would you get a better recovery doing three extractions with 10 mL of organic solvent and pooling the three washes together rather than doing one wash with 30 mL

The answer is true for your question.

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.

The number of medals awarded to the track team during the season.