OVER 200 POINTS- THIS QUESTION IS POSTED TWICE ON MY PROFILE FOR 100 POINTS EACH AND IT IS POSTED A COUPLE TIMES FOR 30 POINTS. IF YOU KNOW THE ANSWER YOU CAN PUT IT ON ALL THE POSTS AND GET ALL THE POINTS I JUST REALLY NEED HELP. THANKS!

A student dissolves 0.250 mol NaC1 in 2.05 kg H20. What is the molality of the resulting solution? Show your work.