9 moles of Ammonia (NH3) are added to 50 L of H2O at a temperature of 29°C. The vapor pressure of water alone is 29.96 mmHg at 29°C. What is the vapor pressure of the Ammonia solution?

 The vapor pressure of the solution at is 29.86 mm Hg

Explanation:

As the relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.

The formula for relative lowering of vapor pressure will be,

where,

= relative lowering in vapor pressure

i = Van'T Hoff factor = 1 (for non electrolytes)

= mole fraction of solute  

=

Given : 9 moles of are dissolved in 50 L or 50000 ml of water

mass of water =  

moles of solvent (water) =

Total moles = moles of solute  + moles of solvent = 9 mol + 2778 mol = 2787  

= mole fraction of solute  

=

Thus the vapor pressure of the solution at is 29.86 mm Hg

supongo que te refieres al paralaje estelar (observable).

si es así, entonces se puede inferir que la estrella está a más de 200 parsecs.

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .