% mass of a solution is the mass of the solute present per 100 g of solution. It can be calculated using the formula,
[tex] Mass % = \frac{Mass of solute (g)}{Mass of solution (g)} * 100 [/tex]
Mass of solute = 4.92 g
Mass of solvent, water = 347 g
Total mass of solution = 347 g + 4.92 g = 351.92 g
Mass % of the solute = [tex] \frac{4.92 g}{351.92 g} * 100 = 1.398 % [/tex]
Therefore, the weight/weight % = 1.398 %
