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

Answer :

(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 :

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

$\text{Density of water}=\frac{9.998g}{10mL}=0.9998g/mL$

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