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Rx: Cromolyn sodium 0.05% Chlorobutanol 0.15% Boric acid qs Purified water Make isotonic solution. How many milligrams of bor
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Answer #1

1.. Rx:

Cromolyn sodium     0.06%

Chlorobutanol             0.15%

Boric acid    qs

    Purified water          qs    30 mL

Make isotonic solution.

How many milligrams of boric acid (m.w. 61.8, E-value 0.52) is needed to make the solution isotonic? [Cromolyn sodium: m.w. 512, E-value 0.14; Chlorobutanol: m.w. 177, E-value 0.24].

answer is Option A-

257.1 mg

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