SOLUTION: Calculate the molarity and the molality of an NH3 solution made up of 30.0 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.

Algebra ->  Test -> SOLUTION: Calculate the molarity and the molality of an NH3 solution made up of 30.0 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.      Log On


   

Question 1200802: Calculate the molarity and the molality of an NH3
solution made up of 30.0 g of NH3 in 70.0 g of water.
The density of the solution is 0.982 g/mL.
Answer by ikleyn(52777) About Me  (Show Source):
You can put this solution on YOUR website!
.

DEFINITION


    The molarity (M) of a solution is the number of moles of solute 
    dissolved in one liter of solution. To calculate the molarity of a solution, 
    divide the moles of solute by the volume of the solution expressed in liters.



    Molality is defined as the “total moles of a solute contained in a kilogram of a solvent.
    Molality is also known as molal concentration. It is a measure of solute concentration 
    in a solution. The solution is composed of two components; solute and solvent.

You do the rest.