What mass of each solute is present in 294 g of a solution that contains 4.86% by mass NaCl and 7.54% by mass Na2CO3

In order to compute the mass of each solute in the sample, we simply multiply the percentage mass of each solute with the total mass of the solution. This is ad such:

Mass (NaCl) = 0.0486 x 294

Mass (NaCl) = 14.29 grams

Mass (Na₂CO₃) = 0.0754 x 294

Mass (Na₂CO₃) = 22.17 grams