0
What else can I help you with?
What must the components of a solution have different in order for distillation to work?
Volatility, vapour pressure
Will mercury vapour work in a sodium vapour fixture?
no
How does vapour compression work?
See my answer to~How does air conditiong work~ on this site.
Why is superheated steam used in power plant?
because if the steam is not superheated the remaining water droplets reduce efficiency and can cause corrosion and pitting. +++ Nearly! Saturated steam, as non-superheated steam is called, is really only steam at the pressure and temperature in the boiler. Once it starts to expand as a gas in doing its work, the pressure and temperature fall and condensation will set in, leaving less and less useful water-vapour to act as a gas. Hence, as you say, the efficiency falls.
If punctured which hose would empty a scuba tank at a faster rate high pressure hose or low pressure hose?
LOW PRESSURE HOSE: Yes, a low pressure hose. A high pressure hose has a very small diameter opening since it is just used to measure pressure and it is not performing any work. A low pressure hose is used to perform work and has a larger diameter opening so air can move through it.
Why does water evaporate below its boiling point?
In case of liquid even at room temperature, the liquid molcules will be moving at random. As they move there are good chances for these molecules to come out of the liquid to the outer atmosphere as they get enough energy to do work against the intermolecular attraction. The same way there are chances for the same liquid molecules to come back to liquid. But comparing these two the earlier has large number of molecules than the latter. This phenomenon of coming out of molecules right from the surface of the liquid is known as evaporation. So evaporation is possible at all temperatures. These vapourisation increases with increase in temperature of the liquid. As these vapours get collected above the liquid surface that would exert a pressure. This is called as vapour pressure. When this vapour get saturated and its saturated vapour pressure becomes equal to the outer atmospheric or surrounding pressure then boiling takes place. Hence in the case of pressure cooker, the surrounding pressure would be made more and so boiling point will be increased beyond normal boiling point. So cooking becomes easier and quicker.
What is the effect of decreased pressure on the boiling and freezing point?
Water, for example, boils when the vapour pressure of steam is at atmospheric pressure. As you heat water the vapour pressure rises. If the outside pressure was low (top of a mountain) then that vapour pressure would be reached at a lower temperature.The boiling point will decrease, because boiling is the ability for water to overcome pressure. Less pressure less work needed, thus you will reach the boiling point faster. When air pressure is reduced, the boiling point of water is also reduced. Water boils more easily if it is under less pressure. Conversely, the boiling point rises if water is under increased pressure, which is the principle upon which the pressure cooker is based.
What is the equation for work in terms of pressure and volume?
The equation for work in terms of pressure and volume is: Work Pressure x Change in Volume.
What is measurement for millibar?
1 Bar is 1 atmosphere of pressure. Much used in very high pressure work. 1 Bar is approx 1kg/cm2
What is a CO cartridge and how does it work?
A CO, or carbon dioxide, cartridge is basically a container of carbon dioxide under pressure. When the canister is punctured, it releases the pressure inside and the force is used to create air pressure. These are commonly used in paintball gun.
What willbe the expression for the work of cohesion between water and benzene?
Water and benzene will have a work of adhesion rather than a work of cohesion as this is the work associated with the connection between two things as opposed to cohesion which is the force holding one thing together. The expression for the work of adhesion is: gamma of the liquid vapour interface + gamma of solid vapour interface - gamma of solid liquid interface. Where gamma is surface tension.
Explain why throttling is a wasteful process and how the turbine can be used to reduce steam pressure for process work?
a turbine would equally reduce the pressure and gain output work whilst mere throttling would not be of any benefit
