Hi there, I'm pretty comfortable with my dosage calcs, but this one has me a bit confused. Here it is: You are to administer MgS04 IVPB at 1Gm. per hour. You are to add 20gm of MgS04 to 500mL D5LR. You have a 10mL vial of 50% MgS04 on hand. a. How m...