Calculate the mass of water and NaCl salt required to prepare 346g.

Calculate the mass of water and NaCl salt required to prepare 346g. solution with a mass fraction of salt of 12%. Determine the amount of the NaCl salt substance.

The mass of the solution is 346 grams;

To find the mass of salt, it is necessary to multiply its mass fraction by the mass of the solution.

m salt = 346 x 0.12 = 41.52 grams;

To find the mass of water, subtract the mass of salt from the mass of the solution:

m of water = 346 – 41.52 = 304.48 grams;

Check: 304.42 + 41.52 = 346;

Find the amount of sodium chloride substance:

M NaCl = 23 + 35.5 = 58.5 grams / mol;

N NaCl = 41.52 / 58.5 = 0.7097 mol;