Question

Mole fraction of aqueous solution of mgo is 0.4 then

Answer 1

Answer:

Full question plzzz ..... if molality is asked then use this formula

Answer 2

The value of the molality will be 37.03m.

Step-by-step explanation:

Although a  part of your question is missing, you might be referring to the following question:
"Mole fraction of an aqueous solution is 0.4. Then, the molality of the solution will be :

Now,

Since mole fraction= 0.4

Number of moles of solvent;$x_{B}$=  0.4

Number of moles of the solute;$x_{A}$= 1-0.4= 0.6

Now, the formula for calculating the molality is:

Molality= $x_{B}$ ×1000÷$x_{A}$×$M_{A}$

Mass of water= 18

Thus, putting the values :

0.4 ×1000÷0.6× 18

= 400÷10.8

=37.03m

Result:

Thus, the value of the molality will be 37.03m.

(#SPJ3)