How many milliliters of a 25% (m/v)NaOH solution would contain 75 g of NaOH? A)25 mL B)75 mL C)33 mL D)19 mL E)3.0 × 10² mL

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Quizplus · Accepted Answer

A 25% (m/v) NaOH solution means there are 25 grams of NaOH in every 100 mL of solution. To find out how many milliliters contain 75 grams of NaOH, you can set up a proportion: $25 \, \text{g} \, \text{NaOH} \, : \, 100 \, \text{mL} \, = \, 75 \, \text{g} \, \text{NaOH} \, : \, x \, \text{mL}$. Solving for $x$ gives $x = \frac{75 \, \text{g} \, \times \, 100 \, \text{mL}}{25 \, \text{g}} = 300 \, \text{mL}$, which is $3.0 \times 10^2 \, \text{mL}$.

How Many Milliliters of a 25% (M/v)NaOH Solution Would Contain