Question: how to calculate mass percent in chemistry?
Answer: mass percent = (mass of element in 1 mole of compound / mass of 1 mole of compound) x 100. The formula for a solution is: mass percent = (grams of solute / grams of solute plus solvent) x 100. or. mass percent = (grams of solute / grams of solution) x 100. The final answer is given as %.