Hurry please!


Calculating - A sample it barium nitrate is placed into a jar containing water. The mass of the barium nitrate sample is 27g. Assume the water is at 20°C and that the resulting barium nitrate solution is saturated. What mass of water is present in the jar?

Respuesta :

Answer : The mass of of water present in the jar is, 298.79 g

Solution : Given,

Mass of barium nitrate = 27 g

The solubility of barium nitrate at [tex]20^oC[/tex] is 9.02 gram per 100 ml of water.

As, 9.02 gram of barium nitrate present in 100 ml of water

So, 27 gram of barium nitrate present in [tex]\frac{27g}{9.02g}\times 100ml=299.33ml[/tex] of water

The volume of water is 299.33 ml.

As we know that the density of water at [tex]20^oC[/tex] is 0.9982 g/ml

Now we have to calculate the mass of water.

[tex]\text{Mass of water}=\text{Density of water}\times \text{Volume of water}[/tex]

[tex]\text{Mass of water}=(0.9982g/ml)\times (299.33ml)=298.79g[/tex]

Therefore, the mass of of water present in the jar is, 298.79 g