Question

10 of 23 > Review | Constants 1 Periodic Table You can practice converting between the mass of a solution and mass of solute when the mass percent concentration of a solution is known. The concentration of the KCN solution given in Part A corresponds to a mass percent of 0.437%. What mass of a 0.437 % KCN solution contains 419 mg of KCN? Express the mass to three significant figures and include the appropriate units. View Available Hint(s) mass = 1.83 mg Submit Previous Answers X Incorrect; Try Again; 5 attempts remaining You may have inverted the ratio so that your final units would be (gKI)'/g (solution). The ratio should be set up so that the mass of solute cancels. Next > vide Feedback

Answer 1

Given:

Mass % of KCN = 0.437 %

Mass of KCN = 419 mg

Use:

Mass % of KCN = Mass of KCN * 100 / mass of solution

0.437 = 419 mg * 100 / mass of solution

mass of solution = 95881 mg

= 95.881 g

Answer: 95.9 g