Use the density of the NaCl solution that you determined to convert the % (m/m) concentration directly into an equivalent % ( m/v) concentration.

The correct answer should be "electrons orbit the nucleus in circular motions exactly as shown on the classic bohr model."

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.