Question

the density of the solution of a salt X is 1.15gml-1 . 20 ml of the solution when completely evaporated gave a residue of 4.6g of the salt .calculate the mass percent of the solute in solution ​

Answer 1

Answer:

20%

Explanation:

The mass of 20 mL of this solution is ( 20 * 1.15 ) g or 23 g, if it gives a residue of 4.6 g of the salt then  it contains the 4.6 g salt

so the mass % of solute is ( 4.6 g / 23 g ) * 100 or 20 %