0
What else can I help you with?
What is stabilisation temperature?
Stabilisation temperature refers to the specific temperature at which a particular system, material, or process reaches a state of equilibrium, where properties like phase, composition, or reaction rates become stable over time. In various fields, such as materials science or thermodynamics, this temperature is crucial for ensuring consistent behavior and performance. It often indicates the point at which thermal energy is balanced, preventing further significant changes in the system.
What is an HPLC column?
HPLC Column is one type of tube containing a stationary phase react with mobile phase to detect peak
Degree of freedom of ethanol -water at azeotrope?
phase rule F=C+2-p c= no. of components p=no. of phase here 2 represents temp and press are constant C=2 [water,ethanol] P=2[liq,vap] so,F=2
Explain the effect of austenite and ferrite stabilizers?
In steels, alloying elements such as silicon, chromium, molybdenum, aluminum, titanium, niobium, etc., stabilize the (body-centered cubic) ferrite phase. These elements are referred to as ferrite stabilizers. Alloying elements such as carbon, nitrogen, manganese, nickel, copper, etc., stabilize the (face-centered cubic) austenite phase. These elements are referred to as austenite stabilizers.
What is flooding and channeling in context with distillation?
Flooding and channeling are very significant terms with both gas absorption and distillation of it involves the use of packed towers. Flooding means that the gas velocity is very high, therefore, does not allow the flow of the liquid from the top of the tower, and flooding occurs on the top of it (ergo, the gas phase is not completely mixed by the water phase). The best gas velocity, should be half of the flooding velocity. For channeling, it is the unequal wetting of the packings in the tower. If channeling occurs, poor mass transfer happens, and therefore, less efficiency of the tower happens.
Why does phase change occur in materials?
Changing the temperature or pressure of a material we can change the phase.
In which phase do most elements occur at room temperature?
Most metals at room temperature are in the solid phase. Gold is the most malleable and ductile of all known metals.
What does a phase diagram show for a substance?
A phase diagram shows if a substance is going to be a solid gas, or liquid at a combination of pressure and temperature. It states what phase of matter a substance is at a specific temperature.
What is the first phase change that is most likely to occur as the pressure on nitrogen gas is increased and its temperature is decreased?
Condensation
Why ferritic and austenitic stainless steel are not heat treatable?
Ferritic and austenitic stainless steels are not heat treatable since "heat treatable" is taken to mean that martensite may be made to form with relative ease upon quenching austenite from an elevated temperature. For ferritic stainless steels, austenite does not form upon heating, and, therefore, the austenite-to-martensite transformation is not possible. For austenitic stainless steels, the austenite phase field extends to such low temperatures that the martensitic transformation does not occur.
What is promethium phase at room temperature?
Promethium does not occur naturally on Earth and is primarily synthetic. At room temperature, promethium is expected to be a solid metal.
What phase occur after s phase?
G2
What must happen to the temperature of the liquid for vaporization to occur?
The temperature of the liquid must reach its boiling point for vaporization to occur. This is when the liquid molecules have enough energy to overcome the intermolecular forces holding them together and escape into the gas phase.
What is a graph that shows the different states of a substance according to the temperature and pressure it is under?
A phase diagram is a graph that shows the different states of a substance (solid, liquid, gas) based on the temperature and pressure it is subjected to. It displays the conditions at which phase transitions occur, such as melting or boiling points.
Why does an energy transfer not always result in a phase change?
An energy transfer does not always result in a phase change because the energy can be used to increase the temperature of a substance without causing it to change from one phase to another. Phase changes occur when a substance reaches a specific temperature and energy level that causes its molecular structure to rearrange, such as melting or boiling.
Consider the phase diagram below What phase change occurs as the temperature of the sample at 3 atm is raised from -90ºC to -50ºC?
The phase change that would occur as the temperature of the sample at 3 atm is raised from -90ºC to -50ºC is solid to liquid. The sample would transition from a solid phase to a liquid phase as it heats up within the two temperature points mentioned while remaining at 3 atm pressure.
How is temperature and phase changes related?
Temperature plays a key role in phase changes of matter. When a substance reaches a specific temperature, it can undergo a phase change such as melting, freezing, boiling, or condensation. These changes occur because the thermal energy is high enough to break the bonds holding the particles together in a particular arrangement.
