alias058

Thank you all SO MUCH !

I am really lost on a particular type of problem, and have looked all over the place and can not seem to find a formula that fits these problems. No matter how I set these problems up I can not get the answers that the worksheet says are correct. I suspect that some of the info in the question is thrown in to confuse, and man has it ever worked in my case. All help GREATLY appreciated a) order : Ancef 500 mg on hand: 1 G reconstitute with 2.5 mL normal saline to yield 3 ml worth of a concentration of 330 mg/ml their answer is 1.5ml b)order: Ampicillin 500 mg on hand : Ampicillin 500mg Reconstitute with 1.8 mL sterile water for a concentration of 250 mg/ml their answer is 2 ml thanks in advance

Hello. I am working on a practice test which provides the answers in the back. No matter what I do, my answers do not match, so clearly I am doing something VERY wrong. I have looked high and low and can not find a formula that I seem to be able to make work to get their answer ! Order: Ampicillin 500 mg Available: Ampicillin 500 mg Directions: Reconstitute with 1.8 mL sterile water for a concentration of 250 mg/ml Their answer is 2ml. Order ancef 500 mg Available : ancef 1 G Directions reconstitute with 2.5 mL normal saline to yield 3 mL worth a concentration of 330 mg/mL Their answer is 1.5 mL Any and all help is greatly appreciated