Question

a child is prescribed 5 gm of mannitol. you have a 20% (w/v) solution. calculate the ml needed.

Answer 1

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