4. How many grames are in 0.25 moles of NaCl ? A. 5.85 g B. 14.6 g C. 29.25 g D. 88.5 g

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To determine the number of grams in 0.25 moles of NaCl (sodium chloride), follow these steps:

1. **Calculate the Molar Mass of NaCl:**
   - **Sodium (Na):** Approximately 22.99 g/mol
   - **Chlorine (Cl):** Approximately 35.45 g/mol
   - **Total Molar Mass of NaCl:** 
     $$
     22.99 \, \text{g/mol} + 35.45 \, \text{g/mol} = 58.44 \, \text{g/mol}
     $$

2. **Calculate the Mass for 0.25 Moles:**
   $$
   \text{Mass} = \text{Number of Moles} \times \text{Molar Mass}
   $$
   $$
   \text{Mass} = 0.25 \, \text{mol} \times 58.44 \, \text{g/mol} = 14.61 \, \text{g}
   $$

3. **Match with the Provided Options:**
   - **B. 14.6 g** is the closest and most accurate answer.

**Answer:**  
**B. 14.6 g**
The mass of 0.25 moles of NaCl is 14.6 grams.

4. How many grames are in 0.25 moles of NaCl ? A. 5.85 g B. 14.6 g C. 29.25 g D. 88.5 g

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