0
How much energy is required to change 34.71 g of liquid water to steam?
Wiki User
∙ 7y ago
The answer will depend on the temperature of the liquid water and the pressure.
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
Solid ice will change to liquid water and then to gaseous steam when you add what?
Energy because energy can be used as heat.
What causes gas to change to a liquid?
Gas turns to liquid when energy is lost. The density of a gas is much less that the density of a liquid. Thus, when energy is lost and the particles of the gas are able to condense, it becomes a liquid.
What is the change in condesation?
Condensation is when water vapour (steam) turns into a liquid. When water vapour are gas particles which have a lot of energy and go in all directions however when water vapor is cooled the particles lose energy and when they bump into each other they do not have enough energy to bounce again so they stay together and form a liquid
The change of water from a gas to a liquid?
The process of changing liquid water into a gas is called evaporation. Energy is added to the liquid water - generally in the form of heat. When enough energy is added, it allows the most energetic molecules at the surface of the liquid to break free of the liquid and enter the gas phase. The more energy that is added, the more water molecules will have enough energy to move into the gas phase. If enough energy is added, all the molecules will leave the liquid and from then on adding energy will just make the gas warmer. Another way to change liquid water into gas is to drop the pressure above the liquid. In this case, it takes less energy for the molecules in the liquid to get away from the liquid so some of them will already be energetic enough to get away. Any mass of liquid water will have a range of energies for the molecules, some will be low energy, others high energy with each collision between the molecules, they either gain or loose energy. If they gain enough energy, they can become energetic enough to escape the liquid as a gas. The higher the pressure, the more energy is required to become a gas. If the liquid water is in contact with some gas - air for example. The liquid will evaporate until the gas is saturated with water vapor. At that point the rate of water molecules dropping out of the gas back into the water (because they don't have enough energy to stay in the gas) is equal to the rate of water molecules escaping from the liquid to become gas. This point is also known as "equilibrium".
What occurs when energy is added or taken away?
When energy is added,solid will melt into liquid or liquid will change into gas. (When energy is added it gains heat).When energy is removed, the liquid will turn into solid or the gas will turn into liquid. (When energy is removed the heat will lose).
Solid ice will change to liquid water and then to gaseous steam when you add what?
Energy because energy can be used as heat.
Is production of steam a chemical or physical change?
The change from liquid water to steam is a physical change in the state of matter. Evaporation is the term for a liquid becoming a gas.
Why liquid water changing into steam is a physical not a chemical change?
The steam when cooled changes back to liquid water. A chemical change is usually not so reversible.
How do you use steam tables?
The steam tables have 16 columns as follows: pressure (absolute), temperature, specific volume of vapor, specific volume of liquid, heat of the liquid, heat of vaporization, total heat of the vapor, entropy of the liquid, entropy of vaporization, entropy of the vapor, internal heat of the liquid, internal heat of vaporization, and internal heat of the vapor (occasionally the external heat of the liquid, vaporization and vapor are included) If the temperature and pressure of steam are known then cross referencing the heat or the volume of a known quantity of the steam can be done. the heat content(enthalpy) of the liquid or vapor can be extrapolated from the chart, as can the entropy and internal energy. The enthalpy less the internal energy = the external energy (or the actual energy required to expand the liquid to a vapor) By determining the starting heat content of steam and final or exhaust heat content of steam the efficiency of a steam engine can be determined. Along with these calculations are the determinations of heat losses, steam quality, loss to entropy,...etc. all calculated using various instruments and the steam tables.
Why does steam condensate into liquid when touching the surface of skin?
Note: this answer might not be accurate, but it would give a general idea of why it happens. Steam has high energy (heat energy). When it comes into contact with your skin, it goes through a change in temperature. Now this change in temperature causes the steam to lose some of its energy (it transfers the heat to your skin). Now if you're familiar with grade 10 or 11 physics (latent heat of vaporization), when steam condenses to liquid form, it releases (gives) heat to its surroundings (your skin). Because it transfers heat to your skin, it no longer has enough energy to remain as steam, so it takes on the liquid form. Hope you've gotten the general idea.
What makes liquid water change into steam?
evaporation .
How do you use thermodynamics steam tables?
The steam tables have 16 columns as follows: pressure (absolute), temperature, specific volume of vapor, specific volume of liquid, heat of the liquid, heat of vaporization, total heat of the vapor, entropy of the liquid, entropy of vaporization, entropy of the vapor, internal heat of the liquid, internal heat of vaporization, and internal heat of the vapor (occasionally the external heat of the liquid, vaporization and vapor are included) If the temperature and pressure of steam are known then cross referencing the heat or the volume of a known quantity of the steam can be done. the heat content(enthalpy) of the liquid or vapor can be extrapolated from the chart, as can the entropy and internal energy. The enthalpy less the internal energy = the external energy (or the actual energy required to expand the liquid to a vapor) By determining the starting heat content of steam and final or exhaust heat content of steam the efficiency of a steam engine can be determined. Along with these calculations are the determinations of heat losses, steam quality, loss to entropy,...etc. all calculated using various instruments and the steam tables.
Is steam a chemical raection?
NO!!!! It is a physical change of water from liquid to gas(vapour).
How can you change a liquid to a vapor?
boil it ! steam is vapourised water.
What kind of energy does a steam engine change to?
Heat And Kinetic Energy
Is steam in the liquid state?
Steam doesn't cool off liquids because it is the release of thermal energy from the water, and that is why, it is therefore hot. If the steam is coming off the liquid itself, it is heat being released by the liquid, but the liquid is not necessarily getting cooler. Think of water boiling on a stove. There may be plenty of steam coming off the water, but the water continues to boil. Subjecting a cool liquid to steam will certainly not cool the liquid.
How do you change state from a gas to a liquid?
Change in temp from gas/steam to cooler temps creates moisture into liquid molecules/condensation
