1. Density of Water:
* The density of water is approximately 1 g/mL. This means 1 mL of water has a mass of 1 gram.
2. Mass of Water:
* Since you have 250.0 mL of water, its mass is: 250.0 mL * 1 g/mL = 250.0 g
3. Molar Mass of Water:
* The molar mass of water (H₂O) is 18.015 g/mol (2 hydrogen atoms at 1.008 g/mol each + 1 oxygen atom at 15.999 g/mol).
4. Moles of Water:
* To find the moles of water, divide the mass of water by the molar mass of water:
250.0 g / 18.015 g/mol = 13.88 moles
Therefore, there are approximately 13.88 moles of water in 250.0 mL.
