a child is prescribed 5 gm of mannitol. you have a 20% (w/v) solution. calculate the ml needed.
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M/v indicates the density.
The density is 20%.
Therefore the density is :
0.2g/ml
Mass = 5g
Density = 0.2 g/ml
Volume = mass /density
= 5/0.2 = 25
= 25 ml
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