Question
What is the percentage concentration of neomycin sulfate required to make an isotonic solution?
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Neomycin sulfate has a molecular weight of 615.6 g/mol. Show more…
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Solutions introduced directly into the bloodstream have to be "isotonic" with blood; that is, they must have the same osmotic pressure as blood. An aqueous $\mathrm{NaCl}$ solution has to be $0.90 \%$ by mass to be isotonic with blood. What is the molarity of the sodium ions in solution? Take the density of the solution to be $1.00 \mathrm{~g} / \mathrm{mL}$.
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