Final answer:
The mass of saturated water vapor at 300 kPa cannot be determined without additional information such as temperature. The mass would typically be found using steam tables or the ideal gas law in correlation with specific temperature values at 300 kPa.
Step-by-step explanation:
The student is asking for the mass of saturated water vapor at a pressure of 300 kPa. To find this, one would typically refer to steam tables or use the ideal gas law formula if the temperature is also known. However, the information provided is not directly related to the pressure of 300 kPa but describes other scenarios instead. For instance, we know that the vapor pressure of water at 20.0°C is 2.33 × 103 Pa with a density of 17.2 g/m3, and at 40.0°C, the vapor pressure is 7.34 × 103 N/m2 with a density of 51.1 g/m3. To calculate the saturation vapor density at other temperatures and pressures, you would use data specific to those conditions.
Without the specific data for 300 kPa, we cannot provide an exact mass. However, typically, to calculate this, one would need to know the temperature at 300 kPa to use the ideal gas law or refer to a steam table corresponding to that pressure. It is important to note that the vapor densities mentioned are for specific conditions, and for other pressures, such as the inquiry of 300 kPa, the corresponding density and therefore the mass for a given volume will differ.