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Why Iodine melting point is above room temperature?
Iodine melting point is above room temperature because its vapor pressure is less than one atmosphere.
How can you tell what the melting and boiling points of water are?
That's physical properties, is it a chunk that you can lift up then its a solid, if it can be poured it's either a liquid or a solid ground into grains.
Is The melting temperature of an alloy is generally lower than its constiuants?
The melting temperature of an alloy is generally lower than the melting temperature of the highest melting temperature of all of its constituents. The eutectic melting temperature is the lowest melting temperature of an alloy system and is in fact sort of defined by that optimal set of percentages of those constituents. The next obvious question is whether there are calculation methods or approximations to determine the melting range of less than "eutectic" percentages.
Experiment for pure and impure naphthalene?
It is easily checked by melting point of Naphthalene, if it is pure its melting point is 79 Celsius otherwise less than 79 Celsius.
How aluminum melts at 460 degrees in galvanizing zinc pot although its melting point is 660?
formation of low melting point solutionsAll metal melting point in alloy form with other metal is vary according to its portion and always less than its pure condition. Please see the Zn-Al phase diagram. You can find that when the Aluminum portion in the zinc bath is less than 10%, the Zn-AL alloy melting point is less that 450 C.
Why Iodine melting point is above room temperature?
Iodine melting point is above room temperature because its vapor pressure is less than one atmosphere.
Explain why the expansion of rock is important in the formation of magma.?
The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the in-situ) temperature, then melting will occur and in this case magma will form.This typically occurs in the earth where hot upwelling mantle material experiences a decrease in confining pressure (as there is less and less overlying material as it rises) which ultimately causes adiabatic or decompression melting.
Why the expansion of rock is important in the formation of magma?
The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the in-situ) temperature, then melting will occur and in this case magma will form.This typically occurs in the earth where hot upwelling mantle material experiences a decrease in confining pressure (as there is less and less overlying material as it rises) which ultimately causes adiabatic or decompression melting.
Why is the expansion of rock is important in the formation of magma?
The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the in-situ) temperature, then melting will occur and in this case magma will form.This typically occurs in the earth where hot upwelling mantle material experiences a decrease in confining pressure (as there is less and less overlying material as it rises) which ultimately causes adiabatic or decompression melting.
Why expansion of rock is important in the formation of magma?
The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the in-situ) temperature, then melting will occur and in this case magma will form.This typically occurs in the earth where hot upwelling mantle material experiences a decrease in confining pressure (as there is less and less overlying material as it rises) which ultimately causes adiabatic or decompression melting.
What would happen if there was less pressure on the earths inner core?
The melting temperature would drop. If it dropped to a point below the in-situ temperature, melting of the inner core would occur.
Is it true that it takes a lot of heat to melt a substance with a low melting point?
See the expert answer above for a specific answer to the question. However, if you mean 'what is a low melting point' then it means that the temperature at which the substance becomes a liquid is reasonably easy to get to, so you have to provide less heat to get to the melting point than you would if it were high.
What temperature can liquids can turn into solids?
It depends since every substance has its melting, boiling and freezing point. ex: water's is 0c or less.
How can you tell what the melting and boiling points of water are?
That's physical properties, is it a chunk that you can lift up then its a solid, if it can be poured it's either a liquid or a solid ground into grains.
When the observed melting point is less than the stanadr value what inference will you get?
The substance whose melting point is being observed is impure.
Is The melting temperature of an alloy is generally lower than its constiuants?
The melting temperature of an alloy is generally lower than the melting temperature of the highest melting temperature of all of its constituents. The eutectic melting temperature is the lowest melting temperature of an alloy system and is in fact sort of defined by that optimal set of percentages of those constituents. The next obvious question is whether there are calculation methods or approximations to determine the melting range of less than "eutectic" percentages.
Why is cryolite used in the manufacture of aluminium?
It's used as a flux. It melts at a significantly lower temperature than aluminum oxide ores, but they will dissolve in molten cryolite. This means less energy is required to extract the aluminum from the ores than if they had to be heated to their melting temperatures.
