How much bromine should be taken to prepare 500 ml of a 2.5% solution with a sweat of 1.3 g / ml.

Solution mass = V * p = 500 * 1.3 = 650 g
w = mass of substance / mass of solution * 100%
0.025 = x / 650
x = 16.25 g
Answer: 16.25 g that’s how much bromine



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