Calculate the molar concentration of the br⁻ ions in 0.76 m cabr2(aq), assuming that the dissolved substance dissociates completely in solution.

CaBr2(aq) is an ionic compound which will have the releasing of 2 Br⁻ ions ions in water for every molecule of CaBr2 that dissolves.
CaBr2(s) --> Ca+(aq) + 2 Br⁻(aq)
            [Br⁻] = 0.76 mol CaBr2/1L × 2 mol Br⁻ / 1 mol CaBr2= 1.5 M
The answer to this question is [Br⁻] = 1.5 M.

If it releases 5 tons a day and there are 7 days a take that answer and multiply by 5 percent (0.05) to find the amount released in one week. leave a comment if you need more .