hello. i've been out of practice for quite some time and i need to go through some drug calculation for my certification. i have been struggling with the following drug calculation problems. if you could please help me solve them, it would highly be appreciated.. thank you very much 1.You have a 1:8000 solution in a 5 mL vial. How many milligrams does the 5 mL vial contain? 2.Calcium Chloride is available in a 10% solution. What volume of solution must be given to administer a dose of 800 mg? 3. You are asked to give Glucose 20 grams IV. You have a bag of Glucose 5%. What volume are you going to infuse? NB: 1% = 1g in 100 mL 4. You have a 10% solution in a 50 mL bag. How many milligrams does the 50 mL bag contain? Please do help me. am desperate.