Why is the normal boiling point of water greater than the normal boiling point of pentane?

The normal boiling point of water is greater than that of pentane due to the presence of hydrogen bonding in water. Water's strong intermolecular hydrogen bonds require more energy to break compared to the weaker van der Waals forces present in pentane. As a result, water has a higher boiling point at standard atmospheric pressure. Specifically, water boils at 100°C while pentane boils at about 36°C.