Final answer:
To calculate the normal boiling point of seawater, we can use the boiling point elevation formula. By calculating the molality of NaCl in seawater and using the boiling point elevation constant, we can find the change in boiling point and add it to the normal boiling point of water.
Step-by-step explanation:
The normal boiling point of seawater can be calculated using the boiling point elevation formula. The formula states that the increase in boiling point of a solvent is directly proportional to the molal concentration of the solute. In this case, seawater contains approximately 3.5% (w/w) of dissolved solids, which is mainly NaCl. Assuming all of it is NaCl, we can calculate the molality of NaCl using its molar mass and the mass of water. Then, we can use the boiling point elevation constant of water and the molality to calculate the change in boiling point, which can be added to the normal boiling point of water to obtain the normal boiling point of seawater.