Posted by kr on Wednesday, February 1, 2012 at 12:28am.
No, and you know that is wrong because 60mg/4.0 mL = 15 mg/mL and
15 mg/mL x 0.75 mL is not 20 mg.
(60 mg/4.0 mL) x ?mL = 20 mg.
?mL = 20 x 4/60 = ?
You are allowed 2 s.f.
1.3 ml
right
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