A chemist prepares a solution of aluminum chloride (AlCl3) by measuring out 4.87 umol of aluminum chloride into a 100 mL volumetric flask and filling the flask to the mark with water.
Calculate the concentration in mmol/L of the chemist's aluminum chloride solution.

To find the concentration of the aluminum chloride (AlCl₃) solution in mmol/L, we can follow these steps:

1. **Convert micromoles (μmol) to millimoles (mmol):**
   - We know that \(1 \, \text{mmol} = 1000 \, \mu \text{mol}\).
   - Therefore, to convert 4.87 μmol to mmol:
     \[
     4.87 \, \mu \text{mol} \times \frac{1 \, \text{mmol}}{1000 \, \mu \text{mol}} = 0.00487 \, \text{mmol}
     \]

2. **Calculate the concentration:**
   - The chemist prepared the solution in a 100 mL volumetric flask, which is equivalent to 0.100 L.
   - The concentration \(C\) in mmol/L can be calculated using the formula:
     \[
     C = \frac{\text{amount of solute in mmol}}{\text{volume of solution in L}}
     \]
     Substituting the values:
     \[
     C = \frac{0.00487 \, \text{mmol}}{0.100 \, \text{L}} = 0.0487 \, \text{mmol/L}
     \]

Therefore, the concentration of the aluminum chloride solution is **0.0487 mmol/L**.

Would you like to explore more details or have any questions?

Here are 5 related questions:
1. How would you convert from molarity to parts per million (ppm)?
2. What is the molar mass of aluminum chloride (AlCl₃)?
3. How do you calculate the number of ions produced by AlCl₃ in a solution?
4. How does temperature affect the solubility of aluminum chloride in water?
5. How would you prepare a 1 M solution of AlCl₃ starting from a solid sample?

**Tip:** Always double-check your units when performing concentration calculations to avoid common errors.

A chemist prepares a solution of aluminum chloride (AlCl3) by measuring out 4.87 umol of aluminum chloride into a 100 mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's aluminum chloride solution.

Learn how to calculate the concentration of an aluminum chloride (AlCl3) solution prepared by dissolving 4.87 μmol of AlCl3 in 100 mL of water. This step-by-step guide includes unit conversions and concentration calculations. Suitable for Grades 10-12 chemistry students.

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