"you are asked to perform a survey in a region of the country you haven't worked in before. so, you look on the map that is maintained by the public land survey system for one of the two main reference lines you will need. the reference line you are looking for for a true north to south reference is called the . this is on the plss maps maintained by ngs"

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.