more mole calculation answer key
{O} = (2 \times 1.008) + 16.00 = 18.016\, \text{g/mol} \] Step 2: Use the formula: \[ \text{Moles} = \frac{\text{Mass}}{\text{Molar mass}} = \frac{25}{18.016} \approx 1.387\, \text{mol} \] Final answer: Approximately 1.39 mol of water. Key Takeaway: Ensure proper use of significant figures