How do you solve this to get the answer?

Mathematics
Tutor: None Selected Time limit: 1 Day

If a hospital pharmacist dilutes a vial containing 1 g of antibiotic with 10ml of water, the solution is then added to 100ml of D5W, what is the concentration in mg/ml, of the antibiotic in the D5W?
How do you solve this to get the answer?

Feb 3rd, 2015

Firstly total volume = 10 ml + 100 ml= 110ml

Quantity of antibiotic = 1g + 100 *0.05 g    [ 1g from 10ml + 100ml of 0.05 from D5W]

                                 = 6g

                                = 6000mg

Concentration = 6000mg in 110ml = 6000/110 = 54. 55 mg/ml


Feb 3rd, 2015

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