An apparataus has three bulbs, a,b, and c. a has h2o, co2, and n2 with a pressure of 564 mmHg, Bulbs b and c are empty. bulb a is 25 degrees celcius, b is -70 celcius and c is -190 celcius. how many moles of h2o are in the system if the stopcock between a and b was open?