Question

what is the specific internal energy of water at 50 kpa and 220.0°c? use data from the steam tables. the specific internal energy of water is kj/kg.

Answer 1

To find the specific internal energy of water at 50 kPa and 220.0°C, use the steam tables to find the saturation temperature and the specific internal energy at that temperature.

Step-by-step explanation:

To find the specific internal energy of water at 50 kPa and 220.0°C, we can use data from the steam tables. The specific internal energy is the energy per unit mass. First, we need to find the saturation temperature at 50 kPa, which is the temperature at which water starts to boil at that pressure. Then, we can find the specific internal energy at that temperature.

1. Using the steam tables, we find that the saturation temperature at 50 kPa is 99.63°C.
2. Since the given temperature (220.0°C) is higher than the saturation temperature, water at this condition exists as superheated steam.
3. We can find the specific internal energy of water at 220.0°C (superheated steam) from the steam tables, which gives us the value of specific internal energy.