Question

A) Calculate the mass of water in the 10mL volumetric flask. (m= (mass of volumetric flask+water) ­ (mass of empty volumetric flask))m= 51.436­41.438= 9.998 g H2O

b) Calculate the density of the water (Dwater) in the 10mL volumetric flask. (Dwater= m/flask volume)Dwater= 9.998g H2O/ 10mL= .9998 g/mL H2O

Answer 1

(a) The mass of water in the 10 mL volumetric flask is, 9.998 g

(b) The density of water in the 10 mL volumetric flask is, 0.9998 g/mL

Explanation :

Part (a) :

Given:

Mass of volumetric flask + Mass of water = 51.436 g

Mass of volumetric flask = 41.438 g

Now we have to calculate the mass of water.

Mass of volumetric flask + Mass of water = 51.436 g

41.438g + Mass of water = 51.436 g

Mass of water = 51.436 g - 41.438 g

Mass of water = 9.998 g

Thus, the mass of water in the 10 mL volumetric flask is, 9.998 g

Part (b) :

Given:

Mass of water = 9.998 g

Volume of water = 10 mL

Now we have to calculate the density of water.

Formula used :

`\text{Density of water}=\frac{\text{Mass of water}}{\text{Volume of water}}`

`\text{Density of water}=(9.998g)/(10mL)=0.9998g/mL`

Thus, the density of water in the 10 mL volumetric flask is, 0.9998 g/mL