Question

A weight of 22.25g was obtained when 10-mL of water at 27C was pipet to empty Erlenmeyer flask. What is the volume delivered by the pipet?

Answer 1

the volume delivered by the pipette = 22.32 mL

Step-by-step explanation:

To calculate this, let us first note that the density of water relates it weight and its volume (density = mass ÷ volume), hence we are going to use density to determine the volume.

Density of water = mass/volume = 0.997 g/ mL

mass = 22.25g

Density = 0.997g/mL

volume = ?

`density = (mass)/(volume)\\\therefore volume = (mass)/(density)\\volume = (22.25)/(0.997)\\volume = 22.32\ mL`

∴ the volume delivered by the pipette = 22.32 mL

Please note that this calculation is based on the fact that the weight of the empty flask has been determined and canceled out.