Question
How much sodium chloride is required to render $100 \mathrm{~mL}$ of a $1 \%$ solution of epinephrine $\mathrm{HCl}$ isotonic with tears?
Step 1
Tears have an osmotic pressure equivalent to a 0.9% (w/v) sodium chloride (NaCl) solution. This means that the solution must have the same osmotic pressure as a 0.9% NaCl solution to be isotonic with tears. Show more…
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