A sample of nitrogen and water vapor is admitted into a flask that contains a solid drying agent. Immediately after admission, the pressure of the flask is 760 torr. After standing some hours, the pressure reaches a steady value of 745 torr. a) Calculate the composition in mole percent of the original mixture. b) If the experiment is done at 20 0C and the drying agent increases in weight by 0.150 g, what is the volume of the flask? (The volume of the drying agent may be ignored.)