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There are two reasons. One is that water molecules are able to form four hydrogen bonds each. This is a lot for a very small molecule. The more hydrogen bonds it has, the more energy (heat) it takes to strip it from its neighbours. The other (lesser) reason is that the difference in density between liquid water and steam vapour is huge compared with most substances, which means that as it vaporizes it must push against atmospheric pressure, to evolve (atmospheric pressure is trying to keep it confined as a liquid - this is why water boils at 68 degC (IIRC) on top of Everest (less resistance from atmospheric pressure)).
But really it is the hydrogen bonds, mostly. Which is also why water has an enormous surface tension....
What else can I help you with?
What materials have high latent heat capacity?
water
Which property of water accounts for the cooling effect of perspiration?
The property of water that accounts for the cooling effect of perspiration is its high specific heat capacity. This means that water can absorb a lot of heat energy before its temperature increases significantly. When sweat evaporates from the skin, it takes away heat energy from the body, leading to a cooling effect.
How do you calculate evaporator capacity?
Evaporator capacity is typically calculated by multiplying the heat transfer rate with the latent heat of vaporization of the refrigerant. The heat transfer rate is determined by the mass flow rate of the refrigerant and the temperature difference between the refrigerant and the surrounding medium. The latent heat of vaporization is the amount of heat required to convert a unit mass of liquid refrigerant into vapor at constant temperature.
What is the tendency of water to resist temperature change?
High specific heat of water due to it's polarity. Many hydrogen bonds are forming and reforming constantly so that energy added to water has more difficulty breaking these bonds and this resists temperature change in the upward direction.
Why does ice cream appear cooler to teeth than ice cold water?
Ice cream feels cooler to our teeth than ice cold water because during the change of state some amount of heat is absorbed which is known as Latent Heat. So in ice no hidden heat is absorbed while in cool water latent heat of fusion or melting is absorbed.
What materials have high latent heat capacity?
water
What are the factors that cause breezes to occur?
The high latent heat of water.
What are the factor that cause sea breeze to occur?
The high latent heat of water.
What accounts for stabilizing effects of Earth's ocean?
The high latent heat of water.
Explain why water is used in hot water bottle for fomentation?
bcoz water has high latent heat
What is the difference of heat and heat capacity?
Heat capacity is the amount of heat something can take before it changes temperature by a degree. If we use water as an example, it is said to have a high heat capacity as you need to heat it a lot before it changes temperature at all. Latent means not yet existing. Latent heat is therefore referring to the amount of heat it would take something for it to change state. Water is said to have a high latent heat of vaporisation. That means that it takes a lot of heat to vaporise water. While heat capacity talks about how much heat something can take, latent heat talks about how much heat something requires to cause a change. Similar concepts but they have slight differences.
Why is water considered as high specific heat and latent heat of vaporization?
The latent heat of vaporization of a liquid is the amount of heat needed to change that liquid when at it's boiling point to a gas. Hydrogen bonds are present between water molecules. These are strong intermolecular forces between the slightly negative oxygen atom in one water molecule and the slightly positive hydrogen atom in another water molecule. These bonds must be broken in order for the water to change from a liquid to a gas and requires a great amount of energy thus explaining water's high latent heat of vaporization.
Why does the temperature stops rising during melting and boiling point?
Because the latent heat of fusion and latent heat of vaporization are very high
Why is water used for fomentation?
i think because it's latent heat is high and it is cheap compared to other liquids, easily available as well.
Why does water have a high latent heat?
Water has a high latent heat due to its strong hydrogen bonding, which requires a significant amount of energy to break apart the bonds. This allows water to absorb or release a large amount of heat while maintaining a relatively stable temperature, making it an effective substance for regulating temperature in both living organisms and the environment.
What is the difference of heat capacity and latent heat?
Specific heat capacity (equation Q=mc��T) is the measure of the energy required in Joules to raise 1kg of a substance by 1.0 K (numerically equivalent to 1 C)Whereas, specific latent heat (equation Q=mL) is the amount of energy needed to change to the state of a substance either from solid to liquid, liquid to gas without changing its temperature.
Why water vaporize at 70 degree Celsius?
70 degree Celsius is qiute a high temperature. in this temperature, the water molecules starts escaping which results in the vapourisation of water.
