where does the free nitrogen produced by bact
Prokaryotes play several roles in the nitrogen cycle. N...
What happened to the temperature of the water after it reached the boiling point? It stayed constant.
latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature.
It requires energy to change from a liquid to a gas. In addition, gas molecules leaving the liquid take away heat energy. Therefore the temperature of the liquid remains constant during boiling. For example, water will remain at 100ºC while boiling.
Answer: The heat energy given out or supplied is used up in overcoming the forces of attraction between the particles of matter. As a result the temperature of the substance does not change.
When water is heated it evaporates, which means it turns into water vapor and expands. At 100℃ it boils, thus rapidly evaporating. And at boiling point, the invisible gas of steam is created. The opposite of evaporation is condensation, which is when water vapor condenses back into tiny droplets of water.
To convert that gram of water to steam requires another 540 calories. So the energy in the steam is 9-fold greater than the energy in the same weight of water at the boiling point. This energy (as heat) is released when the steam condenses to water and the water cools to the temperature of skin.
Why is energy required for the boiling process? The more energy obtained by heat allows molecules to move faster and eventually separate from other liquid molecules to boil and form a gas.
During the boiling of water the temperature stays constant while heat is supplied continuously. It is because the heat provided by the water particles is consumed, and this heat increases their kinetic energy. … Therefore, the temperature stays constant only though heat is continually supplied to the water.
At higher pressures (such as the pressure generated in a pressure cooker), the temperature must be higher before the vapor pressure reaches the surrounding pressure, so water under pressure boils at a higher temperature.
The temperature of boiling water remains constant even if heat is being supplied because the supplied heat is utilized for producing steam. This heat is called latent heat of vaporization as it does not increase temperature of either water or the steam.
VAPORIZATION When water reaches its boiling point of 100ºC, water molecules are moving so fast that they break free of the attractions that hold them together in the liquid state. … CONDENSATION When steam is cooled, it releases thermal energy and turns into its liquid state.
The energy required to change water from a liquid to a solid is 333.7 kJ/kg while the energy required to boil water is 2257 kJ/kg. The amount of energy needed to change the phase of water to a gas from a liquid is 540 times the amount of energy needed to raise the same amount of water 1° C.
Why does temperature NOT initially increase as energy is added after ice begins to melt? The added energy is used to break hydrogen bonds between water molecules. … Water vapor can become liquid water through the release of heat energy, and then become ice through the release of more heat energy.
As ice melts into water, kinetic energy is being added to the particles. This causes them to be ‘excited’ and they break the bonds that hold them together as a solid, resulting in a change of state: solid -> liquid.
the freezing point of water reps the transfer of thermal energy so that the kinetic energy of molecules and the formation of bonds between molecules results in the change of liquid water to solid ice. … adding a solute to water decreases the freezing point of water and increases the boiling point of water.
When the substance melts or boils, energy is put in to breaking the bonds that are holding particles together, which increases the potential energy.
Explanation: When we boil the substance: Energy is provided to the substance during boiling by the means of heating. This heat energy is then absorbed by the substance which results in increase of an internal energy of the substance.
When freezing takes place, latent heat of fusion is discarded. When latent heat of fusion is discarded, material gets solidified. This process takes place at constant temperature, because latent heat is a constant quantity.
How does the purity of the substance affect the melting and boiling points? Impurities frequently cause melting point depression and boiling point elevation.
Once all the liquid is frozen then the temperature will resume the decrease. The temperature of the ice will continue to decrease until it reaches the same temperature as the outside air which is 20 F. Liquid water has more energy than frozen water. When water freezes it gives up some of the water’s energy.