Question

calculate the mass by volume percentage of a solution containing 40 gram (density=1.5 g/ml) of solute in 320 g of water (density=1 g/ml)​

Answer 1

Answer: 11.54 %

Explanation:

mass by volume percent = weight of the solute * 100 / volume of solution

weight of the solute = 40 gram

volume of the solution = volume of solute + volume of solvent

=> volume of solute or volume of solvent = mass / density

=> volume of the solution = 346.6 ml

=> weight of the solute * 100 / volume of the solution

=> 40*100/346.6 ....   by solving the answer is 11.54%

Answer 2

Answer:

mass of solute = 40g

volume of solution = mass / density (solute+ solvent)

=40÷1.5 + 320÷1

= 26.6 + 320 = 346.6

mass / volume % = (mass of solute ÷ volume of solution )%

= (40 ÷ 346.6)%

= 11.54%