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The problem asks for the volume percent of hexane in a solution. Let's break this down.

We are given:
- Volume of hexane: \( 82.6 \, \text{mL} \)
- Volume of THF: \( 61.0 \, \text{mL} \)
- Total volume of solution: \( 149 \, \text{mL} \)
- Densities are provided for hexane (0.66 g/mL) and THF (0.89 g/mL), but they are not needed to solve for volume percent since it is volume-based, not mass-based.

The formula for volume percent \( \% (v/v) \) is:

\[
\% (v/v) = \left( \frac{\text{Volume of hexane}}{\text{Total volume of solution}} \right) \times 100
\]

Substituting the values:

\[
\% (v/v) = \left( \frac{82.6 \, \text{mL}}{149 \, \text{mL}} \right) \times 100
\]

Now calculating:

\[
\% (v/v) = \left( \frac{82.6}{149} \right) \times 100 = 55.44\%
\]

So, the volume percent of hexane is approximately **55.4%** (to 3 significant digits).

Would you like further details or have any questions about this calculation?

Here are 5 related questions:
1. How do densities affect calculations if we needed the mass percent instead?
2. Why is it important to use significant figures in these calculations?
3. What are other common applications of volume percent in chemistry?
4. How would the calculation change if we were asked for mass percent instead of volume percent?
5. Can you explain how temperature might affect the volumes used in this calculation?

**Tip:** In solution problems, always check if you need to work with mass or volume; this will determine the method and which properties to use (e.g., density).

A 149 mL solution was made by mixing 82.6 mL of hexane, which has a density of 0.66 g/mL, and 61.0 mL of THF, which has a density of 0.89 g/mL. Calculate the volume percent of hexane in this solution. Be sure your answer has the right number of significant digits.

Learn how to calculate the volume percent of hexane in a solution. The solution contains 82.6 mL of hexane and 61.0 mL of THF, with a total volume of 149 mL. This problem uses the volume percent formula and involves significant figures. Ideal for high school chemistry students.

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