Question

A centimolal solution of na2co3 is provided find mole fraction of solute and solvent

Answer 1

Here is what I did and got the answer and don't understand why I need to do it:

1 gNa2CO3⋅10H2O286 gNa2CO3⋅10H2O0.003447 mol0.020 L(0.174825 M)(0.020 L)x=0.003447 mol=0.174825 M=(0.250 L)(x)=0.013986 M