00:01
All right, so here, let the mass up, let the mass up this atom, our compound is, this is m sub a in hard solution.
00:17
And the mass of h2o will be lit.
00:21
This is m sub a also, right? so the evaporator contains 30 .6kg of this atom are compound.
00:35
This is no, 302, in 100kg of h2, right.
00:42
So therefore, the mass fraction will be, the mass fraction of this will be x sub a, this will be m sub a over m sub a plus m sub b right so this is let this is 30 .6 over 100 plus 30 .6 this is x .a which is 0 .2343 right so the mass fraction of h2 o is x sub b and this is one minus x sub a right so the mass fraction of h2 o is x sub b and this is one minus x up a right so the mass fraction of h2 o will be this is the mass fraction of h2o, and this is the mass fraction of this, right? so now, this will be 1 minus x of a, which is 0 .2343, and this is 0 .7657, right? so the total mass of the solution is 100 kg, and we know that this will be mass of a, this will be x of a times...