Final answer:
To determine the pressure, quality, and density of steam at 200°C in a rigid tank with liquid and vapor phases, use the steam tables for properties at 200°C and apply definitions of quality and mixture density.
Step-by-step explanation:
The student's question pertains to thermodynamics, specifically the determination of various properties of steam in a rigid tank at 200°C with two phases present: liquid and vapor. Since the steam is at a temperature above the typical boiling point of water at 1 atm (100°C), one can infer that the pressure inside the tank is greater than atmospheric pressure. To find the exact pressure, the quality (the mass fraction of the vapor phase), and the density of the steam, properties such as enthalpy, entropy or specific volume for both the saturated liquid and vapor at 200°C would typically be looked up in steam tables.
(a) The pressure of the steam would correspond to the saturation pressure at 200°C. (b) The quality of the mixture is the ratio of the mass of the vapor to the total mass of the mixture. (c) The density of the mixture can then be determined using the quality, along with the specific volumes of the saturated liquid and vapor.