Ok, I'm a student nurse enrolled in the LVN program and I'm about to start my second semester. I have never been a brainaic at math and this med math is KILLING me. I've been lucky enough to not flunk out (so far... it's been a nightmare!) but I could REALLY use the extra help with things like DF's, and da equations. The problem reads: Ordered: Heparin 18 units per kg per hr in a continuous infusion. Available: Heparin 25,000 units in a 500 mL D5W. Patient's weight: 70kg. a. How many units per hr are ordered? : DA equation: b. The nurse will set the flow rate at how many mL per hr?: DA equation: I'm soooooo lost! Can anyone help me?