Calculate the concentration of the solution in mass percent: 32.3 mg KNO3 in 2.44g of H2O.
To calculate the concentration of the solution in mass percent, you need to determine the mass of the solute (KNO3) and the mass of the solution (H2O).
Given:
Mass of KNO3 = 32.3 mg
Mass of H2O = 2.44 g
Step 1: Convert the mass of KNO3 from milligrams (mg) to grams (g).
Since there are 1000 mg in 1 g, divide the mass of KNO3 by 1000 to convert it to grams:
32.3 mg / 1000 = 0.0323 g
Step 2: Calculate the mass percent by dividing the mass of KNO3 by the mass of the solution and multiplying by 100.
Mass Percent = (Mass of KNO3 / Mass of H2O) * 100
Mass Percent = (0.0323 g / 2.44 g) * 100
Mass Percent = 1.32 %
Therefore, the concentration of the solution in mass percent is 1.32%.