156 g sample of steel has a volume of 20.0 mL. what is the density of the steel sample
2 answers:
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Answer:
6.24 x 10-3 M
Explanation:
Hello,
In this case, for the given dissociation, we have the following equilibrium expression in terms of the law of mass action:
Of course, water is excluded as it is liquid and the concentration of aqueous species should be considered only. In such a way, in terms of the change , we rewrite the expression considering an ICE table and the initial concentration of HBrO that is 0.749 M:
Thus, we obtain a quadratic equation whose solution is:
Clearly, the solution is 0.00624 M as no negative concentrations are allowed, so the concentration of BrO⁻ is 6.24 x 10-3 M.
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