Find the mass of salt and the volume of water that will be required to prepare 3kg of 15% brine for salting watermelons.
The mass of the solution is 3,000 grams;
To find the mass of salt, it is necessary to multiply its mass fraction by the mass of the solution.
m salt = 3000 x 0.15 = 450 grams;
To find the mass of water, subtract the mass of salt from the mass of the solution:
m water = 3,000 – 450 = 2,550 grams;
The density of water is 1 gram / cm3;
The volume of water is 2,550 x 1 = 2,550 ml.
Check: 450 + 2,550 = 3,000;
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