Tricky solution question

by Robbin
(Donalsonville,GA.)

A hospital pharmacist dilutes a vial containing 1gm 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?











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Tricky solution question

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9.1mg/ml
by: Van

total solution = 110ml
1g/110ml = 0.0091g/ml or 9.1mg/ml

Solution
by: Anonymous

(initial vol)(initial strength)=(final vol)(final strength)

1 gm=1000 mg

(1000 mg)(10mL)=(100mL)(x)
10000=100x
10000/100=100x/100
x=100mg

So, 100mg/100mL or 1mg/mL

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