Question

Correct expression: 0.005 g solution x - 1 g solution don = 0.6 mg KI Part D 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 = Value Units Submit rovide Feedback Next >

Answer 1

Given mass percentage ( % w/w) = 0.437% mass porcentage - % w/w 1 % w/w = weight of solute you - weight of solution X 100 From the data % w/w = 0.437% weight of solution = 419 mg .. weight of solutte (KCN) = weig ut of solution (way) 100 substitute the values (0.437) (41a mg) 100 - = weight of KCN 1.83mg = mass of KCN. mass of KCN = 183 mg mass = 1.83 mg