16.456 g of ethylamine (MM = 45.08 g/mol) are dissolved and diluted with water to 175.00 ml. Calculate the molarity of the ethylamine.

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**Calculation of Molarity of Ethylamine**

To determine the molarity of ethylamine, use the following information:

- Amount of ethylamine: 16.456 g
- Molar mass (MM) of ethylamine: 45.08 g/mol
- Volume of the solution after dilution: 175.00 mL

**Calculation:**

1. **Convert the volume from milliliters to liters:**

   \[
   175.00 \text{ mL} = 0.17500 \text{ L}
   \]

2. **Calculate the moles of ethylamine:**

   \[
   \text{Moles of ethylamine} = \frac{\text{mass}}{\text{molar mass}} = \frac{16.456 \text{ g}}{45.08 \text{ g/mol}} = 0.3648 \text{ mol}
   \]

3. **Calculate the molarity (M):**

   \[
   M = \frac{\text{moles of solute}}{\text{liters of solution}} = \frac{0.3648 \text{ mol}}{0.17500 \text{ L}} = 2.084 \text{ M}
   \]

Thus, the molarity of the ethylamine solution is 2.084 M.
Transcribed Image Text:**Calculation of Molarity of Ethylamine** To determine the molarity of ethylamine, use the following information: - Amount of ethylamine: 16.456 g - Molar mass (MM) of ethylamine: 45.08 g/mol - Volume of the solution after dilution: 175.00 mL **Calculation:** 1. **Convert the volume from milliliters to liters:** \[ 175.00 \text{ mL} = 0.17500 \text{ L} \] 2. **Calculate the moles of ethylamine:** \[ \text{Moles of ethylamine} = \frac{\text{mass}}{\text{molar mass}} = \frac{16.456 \text{ g}}{45.08 \text{ g/mol}} = 0.3648 \text{ mol} \] 3. **Calculate the molarity (M):** \[ M = \frac{\text{moles of solute}}{\text{liters of solution}} = \frac{0.3648 \text{ mol}}{0.17500 \text{ L}} = 2.084 \text{ M} \] Thus, the molarity of the ethylamine solution is 2.084 M.
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