Respuesta :
The concentration of volume of solution can be expressed in many ways for example: mass percent, volume percent, mass-by-volume percent, etc.
The formula for mass-by-volume percent is:
mass-by-volume percent = [tex]\frac{g of solute}{100 mL of solution}[/tex]
2% erythromycin solution means 2 g of erythromycin in 100 mL.
Consider, for 15 g the volume be X mL.
So,
[tex]\frac{X mL}{15 g} = \frac{100 mL}{2 g}[/tex]
[tex]X= \frac{100\times 15}{2}[/tex]
[tex]X= 750 mL[/tex]
Hence, the volume is [tex]750 mL[/tex].
Let the volume of erythromycin solution be x
And given amount of erythromycin solution is 15 g
then
2% of x = 15 g
That is
[tex]\frac{2}{100} \times x = 15[/tex]
2x = 1500
x = 750
So, x found to be 750.
So, the volume of erythromycin solution found to be 750 mL that is 750 mL of a 2% erythromycin solution can be made from 15 gm of erythromycin powder.
