Answer:
2.63 ml of diluent should be added to prepare an injection containing capreomycin, 300 mg/mL
Explanation:
300 mg/ml is 0.3 g/ml
1g of capreomycin was contained
volume of solution = mass of capreomycin / ( concentration of capreomycin solution)
= ( 1g) / ( 0.3g/ml) = 3.33 ml
Now when 2.15 ml diluent added we got solution volume as 2.85 ml
Therefore, volume by capreomycin = 2.85 - 2.15 = 0.7 ml
1g capreomycin occupies 0.7 ml
volume of dilent needed = injection volume - volume occupied by capreomycin
volume of dilent needed = 3.33ml - 0.7ml
volume of dilent needed = 2.63 ml
