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The problem asks to calculate the mass of the solution the student should use based on the given information:

- The student needs **75.0 g** of 1-bromobutane.
- The available solution is **44.8% w/w** (weight/weight) of 1-bromobutane in acetone.
- The total mass of the available solution is **1.0 kg** (or **1000 g**).

### Step-by-Step Solution:

1. **Percentage Concentration Interpretation**:
   A 44.8% w/w solution means that in 100 g of the solution, there are 44.8 g of 1-bromobutane.

2. **Set up a Proportion**:
   Let \( x \) be the mass of the solution needed to get 75.0 g of 1-bromobutane:
   \[
   \frac{44.8 \, \text{g (1-bromobutane)}}{100 \, \text{g (solution)}} = \frac{75.0 \, \text{g (1-bromobutane)}}{x \, \text{g (solution)}}
   \]

3. **Solve for \( x \)**:
   \[
   x = \frac{75.0 \times 100}{44.8} = 167.41 \, \text{g of solution}
   \]

Thus, the student needs **167.41 g** of the solution to get 75.0 g of 1-bromobutane.

### Check if there's enough solution:
- The available solution is 1000 g, and the student only needs 167.41 g, so there's enough solution.

Would you like more details or have any questions?

### 5 Related Questions:
1. How is w/w concentration defined in different types of solutions?
2. What are other common units of concentration used in chemistry (e.g., molarity, molality)?
3. How can you convert between w/w and molar concentration?
4. What are the safety measures when handling 1-bromobutane and acetone?
5. How would this calculation change if a different concentration (e.g., 50% w/w) of 1-bromobutane were used?

**Tip**: When dealing with concentrations, always double-check if you're using weight-based, volume-based, or mole-based percentages for accurate conversions.

A chemistry student needs 75.0 g of 1-bromobutane for an experiment. He has available 1.0 kg of a 44.8% w/w solution of 1-bromobutane in acetone. Calculate the mass of solution the student should use. If there's not enough solution, press the 'No solution' button. Be sure your answer has the correct number of significant digits.

Learn how to calculate the mass of a solution when given a 44.8% w/w concentration of 1-bromobutane. The problem walks through step-by-step proportional reasoning and concentration formulas, suitable for high school chemistry students.

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