How many grams of water and vinegar should be taken to prepare 150g of 7% vinegar solution?

The mass of the solution is 150 grams;

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

m vinegar = 150 x 0.07 = 10.5 grams;

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

m of water = 150 – 10.5 = 139.5 grams;

The density of water is 1 gram / cm3. To prepare this solution, you need to measure out 139.5 milliliters of water.

Check: 139.5 + 10.5 = 150;