Question

Chemistry 2A Lab 13: Solution Calculations 12. What is the concentration of a solution made by adding 247 mL of pure liquid soap (100.0% soap) to total volume of 2.67 L? 13. Calculate the volume required of a 42.0% iodine solution to prepare 300.0 mL of a 23% iodine. 14. A patient is to receive 0.200 mg of morphine per day delivered subcutaneously by injection. How many mL of a 0.500 mg/mL vial of morphine is needed for one day medication? 15. A patient requires 100.0 mg of Ceclor PO every 6.00 hours. Ceclor is available in 125 mg/5.00 mL concentration. How many milliliters should be used for one day! 16. One dose of 0.500 g Kefzol is to be administered by IV. 0.500 g Ketzol is diluted to 50.0 mL total volume. The drug is to be administered over 30.0 minutes. How many milliliters per hour will the IV pump be set to administer one dose? 17. A patient is to receive one dose of 400.0 mg of Zithromax by IV. The powdered Zithromax is reconstituted (diluted) to 100.0 mg/mL. How many milliliters of reconstituted Zithromax is needed for one dose? 18. A young 44.0 pound patient is prescribed Vistaril for nausea. Standard dosage is 0.500 mg/kg per day. Calculate the mg of Vistaril required for one day. 19. A 110.0 pound patient is to receive Heparin by IV with an infusion rate of 18.0 Units/kg/hour. Heparin is supplied at 25,000.0 Units in 250.0 mL. How many milliliters per hour should the IV pump be set for this infusion? 20. A patient is prescribed 15.0 mg of Lasix immediately. Lasix is available in 10.0 milligram (scored) tablets. How many tablets are required?

What is the concentration of a solution made by adding 247 mL of pure liquid soap (100.0% soap) to total volume of 2.67 L?

Answer 1

SOLUTION:

(12)

Given that,

Initial concentration,

M1 = 100%

Initial volume,

Vi = 247 ml

Final volume of solution,

V2 = 2.67 L = 2670 mL

(1 L = 1000 mL).

Therefore, Final concentration of the solution is given by:

M.V1= M2.12

M.Vi . 12M2 100% x 247 mL 2670 mL

:: V2 = 9.25%

Please post one question at a time. Thank you. Hope this helped.