0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How do you separate heavy water?
heavy water can be seperated by exchanging the D20 between ordinary water and hydrogen sulphide at different temperatures
The typical thermodynamic efficiency of an OTEC installation running between surface water at 220 C and deep water at 40 C is about?
40C + 273 = 313K 220C + 273 = 493K (1 - (313/493)) *100) = 36.5% thermodynamic efficiency. Amazing, but then your temperatures are fantastic!
Why can't water constantly release heat into the air?
There may be a given amount of heat in the water, and as that energy is released into the air, the water cools down. When the temperatures of the water and air are the same, the air cannot get warmer as a kind of equilibrium will have been reached. This is a thermodynamic phenomenon.
What are 3 examples of thermodynamic systems?
boiling water, pneumatics, hot water in a thermos
Temperatures of water?
temperatures of water
Why lasers do not travel in water?
Being primarily scientific or industrial instruments, lasers are not typically manufacturedwater-tight; when placed in water, their electronics usually fail.However, the beam of light emitted by a laser travels quite well in water.
Why is water heavy yet the elements in it are either air or lighter than air?
Water isn't "heavy." Liquid water is more dense than air, yes, but water vapor is (significantly) lighter than air. Water is a liquid at temperatures far higher than what might be expected based on its molecular weight because of hydrogen bonding.
Why is the boiling point of heavy water higher than that of ordinary water?
The boiling point of heavy water is higher than "regular" water because the water is a bit more massive (owing to the extra neutrons stuck to protons in hydrogen nuclei) and more energy is needed to allow the heavy water to change state. Boiling means the molecules gain kinetic energy and "escape" the bonds that are holding the water molecules together in their liquid state. Those same bonds act on the heavy water molecules just like "light" water, but because those molecules are a bit more massive, heavy water molecules need more kinetic energy to "break loose" and "escape" the liquid. That means higher temperatures are required for higher concentrations of heavy water to bring it to a boil. A link is provided to the Wikipedia article on heavy water.
What can exist in three states?
Water. The thermodynamic scale of temperature is based on the triple point of water, the temperature at which water coexists in all the three states.
Does a cup that has warm water has the same kinetic energy as a cup that has cold water in it?
No. The molecules of hot water contain greater kinetic/thermodynamic energy.
What can exist in all three states?
Water. The thermodynamic scale of temperature is based on the triple point of water, the temperature at which water coexists in all the three states.
Is the pH of an acid higher or lower than water?
Water at different temperatures has different densities. Water at 4°C, is the densest and so it is heavier by volume than water at lower or higher temperatures. However, when water is mixed, the temperature will become the average of the two water temperatures. This means that you can't see one floating on the other - even if you coloured one of the water temperatures, it would mix almost immediately.Something else to consider is that water is not as homogenous as most people think. Naturally occuring water contains deuterium oxide, 17O and 18O isotope water, and tritiated water are forms of heavy water.
