A solution contains 50 ml of alcohol mixed with 130 ml of water.Calculate the concentration of this solution.

A solution contains 40 grams of common salt in 320 grams of water.Calculate the concentration in terms of mass by mass percentage of solution.

A solution contain 50 g of a common salt in 200 g of water. Calculate the concentration in terms of mass by mass percentage of the solutions.

1.032 kg of aqueous, one molal methanol is added with 500 mL water . Calculate the molality of dilute solution.

80 ml of solution contains 20 g of solute .Calculate the concentration in terms of mass of volume percentage of the solution.

1 ml of 1 M solution is mixed with 999 ml of pure water.

An aqueous glucose solution contains 180 ppm glucose. If one .ml. of the solution is mixed with 99ml water, the molarity of the resultant solution is x xx10^(-y) . What is y? (d=1 gm/cc)