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Are the boiling points higher temperature than the melting points?
yes, for the same molecule. However, some substances don't have a liquid phase and so the melting point is exactly the same as the boiling point at normal pressures (sublimation is the phase change from solid -> gas)
Do proteins have definite melting points?
Different proteins have different melting points.
What is effect of decreasing pressure on solid carbon dioxide?
normal melting and boiling points are those when the pressure is 1 atmosphere, Solid CO2 gets converted to gaseous state (sublimation) on decrease of pressure to 1 atmosphere
Are melting points of molecular substances higher than those of ionic substance?
Ionic substances have higher melting points.
What are the boiling and melting points of Rubiduim?
Melting 39.31 CBoiling 688 C
What two uses do chemist put the melting points of substances?
- a substance can be identified after the melting point because it is a specific physical characteristic- melting points knowledge is necessary for technology
How do you determine melting point of a compound that sublimes or decomposes before melting?
For compounds that sublimate or decompose before melting, a sublimation point or decomposition temperature can be determined instead of a melting point. This can be done by heating the compound and observing at what temperature it starts to sublimate or decompose. Various techniques like differential scanning calorimetry (DSC) or thermogravimetric analysis (TGA) can be used to analyze these temperature changes.
Are the boiling points higher temperature than the melting points?
yes, for the same molecule. However, some substances don't have a liquid phase and so the melting point is exactly the same as the boiling point at normal pressures (sublimation is the phase change from solid -> gas)
Why diamond and graphite have high sublimation points?
Diamond and graphite have high sublimation points because they are both composed of carbon atoms that are strongly bonded together in a crystal lattice structure. Breaking these strong covalent bonds requires a lot of energy, resulting in high sublimation points for both substances.
Which ions have high melting points?
positive ions have high melting points
Do proteins have definite melting points?
Different proteins have different melting points.
Compared with the melting points of ionic compounds the melting points of molecular solids tend to be .?
Ionic compounds have a higher melting point.
What is effect of decreasing pressure on solid carbon dioxide?
normal melting and boiling points are those when the pressure is 1 atmosphere, Solid CO2 gets converted to gaseous state (sublimation) on decrease of pressure to 1 atmosphere
Can iodine and naphthalene be separated by sublimation?
Yes, iodine and naphthalene can be separated by sublimation because they have different sublimation points. Iodine sublimes at a lower temperature compared to naphthalene, allowing for the selective separation of the two substances based on their sublimation properties.
How do you identify solids at melting or boiling points?
Melting and boiling points are different for each compound or element.
Do elements compounds and mixtures have fix melting and boiling point?
Elements have fixed melting and boiling points, while compounds have varying melting and boiling points depending on their composition. Mixtures do not have fixed melting and boiling points, as they are composed of multiple substances which each have their own individual melting and boiling points.
Where are the freezing points and melting points of gold?
1064.18
