Answer:
0,250 mL of cefazolin (Ancef) are administered.
Step-by-step explanation:
In order to administer 250mg of cefazolin (Ancef) from a vial which concentration is 1gm/mL the following conversion must be applied:
1gm = 1000 mg
Therefore, using the rule of three, (250 mg x 1 mL) / 1000 mg = 0,250 mL.