Calculate Mass of Paradichlorobenzene for .05 Molal Solution

[babbagee]

Calculate the mass of paradichlorobenzene (M=147.01g/mol) that should be added to 20.00 ml of cyclohexane (d = .779g/ml) to make a .05 molal solution.

I did this problem but i don't know if i did it correctly.
first i found the mass of cyclohexane by using m=dv.

(.05moles solute/kg solvent)(15.58g)(1kg/1000g)(147.01g/mol) = .11g

does this seem correct. I am not sure.

Thanks.

 

[thunderfvck]

That's what I got...