One method of producing drinkable water is to force seawater through a membrane that does not allow the salt to pass through. Such a process is called reverse osmosis (RO) and the membrane a reverse osmosis membrane. A large reverse osmosis facility continuously filters 2300 L of seawater per hour. The seawater contains sodium chloride (NaCl) at a concentration of 1.4 M. Two streams emerge from the RO facility: (1) a ""brine"" stream with a sodium chloride concentration of 5.6 M and flow rate of 560 L/hr and (2) a drinking water stream. The densities of the three streams can be considered to be the same. What is the sodium chloride concentration in the drinking water?