The mass of the nails and copper sulfate solution used in this investigation was 250g The mass of the copper and tran sulfate solution produced in this nvestigation would be
250g

He it would because 250g is the answer is to 256g

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.