1) I think you mean Molality** and its (moles of the solute)/( kg's of Solvent)
And since there is no mention of solvent it is safe to assume it is Water which conveniently 1 g/mL so 250 mL would equal dot dot dot. you can do the rest
2) and and molarity is Moles per liter / Liters of solution so you would find the molarity of the first one and then use
C1V1 = C2V2 where C = concentration (in this case molarity) and V = volume of before and after hence V1 and V2
Morality is Philosophy not Chemistry
unless its some obscure term i haven't came across yet in which case im excited to learn the meaning as well.
**edit** Perhaps the first question was a typo and they were asking for the molarity too.