The apparatus shown consists of three temperature-jacketed 1.955 L bulbs connected by stopcocks. Bulb A contains a mixture of H2O(g), CO2(g), and N2(g) at 25°C and a total pressure of 544 mmHg. Bulb B is empty and is held at a temperature of -70°C. Bulb C is also empty and is held at a temperature of -190°C. The stopcocks are closed, and the volume of the lines connecting the bulbs is zero. CO2 sublimes at -78°C, and N2 boils at -196°C.
How many moles of H2O are in the system?