Question

You are a nurse, and the doctor asks you to administer a patient 55 milligrams (mg) of Codeine phosphate by subcutaneous injection. You have a 75 mg/mL liquid for injection. How many mL will you administer?

Answer 1

Rule of Three

Answer 2

hint: you have to cancel out (mg) units, the answer must have units of ml

Answer 3

Rule of Three?

Answer 4

We have : 1 mL per 75 mg of codeine phosphate,
x ml per 55 mg of codeine .. .

Answer 5

is that make sense ?

Answer 6

\[1 mL /75 mg = x mL/55mg\] solve for x

Answer 7

Which compound, ethanol or DME has higher greater molecular polarity?