Question

what is the unit of mass percent, mole fraction , molality ,molarity?

Answer 1

mass percent=no unit
mole fraction=no unit
Molality=moles per kg
Molarity=moles per litre

Answer 2

Molarity( M)= no of moles of solute/ volume of solution in litre . Then it's unit mol/ litre .

Molality ( m) = gram moles of solute/ weight of solve not in kg .then it's unit mol/ kg. Mole fraction = no unit mass percent= no unit