Decide if these sentences are true or false and rewrite the false sentences correctly. Be careful because each mistake discounts a right answer:

a) The density of a solution is equal to the mass of the solute divided by the volume of the solvent.

b) The interaction between unlike charges is a repulsion force.

c) Distillation is the method to separate miscible liquids.

d) Decantation is the correct method to separate a mix of alcohol and water.