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The attending veterinarian would like you to administer a 22 mg/kg dosage of Cefazolin to a 67 pound dog that is about to have surgery. You find that the vial that has been reconstituted is empty and you need to make a new bottle. How much sterile water will you add to a 1 gram vial if you want the concentration to be 200 mg/ml?

Respuesta :

Answer:

5 milliliter of sterile water will be added to a 1 gram vial.

Explanation:

Concentration of dosage required = 200 mg/ml

That is 200 mg of Cefazolin in 1 mL of solution.

1 mg = 0.01 g

1 mL = 0.001  L

[tex]200 mg/ml=\frac{200\times 0.001 g}{0.001 L}=200 g/L[/tex]

The for 1 grams of Cefazolin will be present in x liters of water.

[tex]\frac{1 g}{x}=200 g/L[/tex]

[tex]x=\frac{1 g}{200 g/L}=0.005 L = 5 ml[/tex]

5 milliliter of sterile water will be added to a 1 gram vial.

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