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Carbon Dioxide melts at -78 degrees Centigrade. Carbon Dioxide will boil at -57 degrees C. Carbon Dioxide does not stay in liquid form unless certain parameters exist, it is a very temporary stage.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoIt depends on the pressure. At normal atmospheric pressure, carbon dioxide neither melts nor boils... it sublimes (goes directly from solid to gas) at about 195K.
Added:
At 1.0 bar, normal pressure, it sublimes (solid-gas phase change) at -78 °C, 194.7 K without passing through its liquid phase.
At 5.185 bar the boiling point (from liquid) is -57 °C, 216.6 K.
Wiki User
∙ 12y agoCo2 is the only substance with no liquid form. Therefore it only boils and condenses. The threshold for this is roughly room temp.
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Do nonmetals have higher melting points or lower boiling points?
lower 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
Why might you expect silicon dioxide and carbon dioxide to have similar melting and boling points?
You Ultimately would not expect them to have similar melting and boiling points.This is because Carbon Dioxide is a gas, it might have strong covalent bonds between their atoms but between their molecules they have weak intermolecular forces, therefore these forces are easily overcome during heating in lower temperaturesHowever when you look at Silicon Dioxide, it has a macromolecular structure. In other words the whole solid is actually just one molecule which its atoms are each covalently bonded to each other. Therefore since it has strong covalent bonds between them you would expect them to have extremely high melting and boiling points.Diamond is a macromolecular structure and it has a melting point of 3006 degrees centigrade. You could expect Silicon Dioxide's melting point (and boiling point) to be similarly high.
What is melting points and the boiling points?
Melting point: the temperature at which a solid become a liquid. Boiling point: the temperature at which a liquid become a gas.
What element has the highest melting and boiling points?
I am not entirely sure about wich one but it will be the one with the leaset electrons in it and a outer shell
Why are the melting and boiling points of air never given?
Air is a mixture; it doesn't have a melting or boiling point. It has a mixture of carbon dioxide, ozone, oxygen, nitrogen, helium, etc. look up those gases separately and you will get answers.
Do elements compounds and mixtures have fix melting and boiling point?
Yes, elements have fixed melting points; but some exceptions are with the elements having allotropes (as carbon, sulfur, phosphorous, etc.) - each allotrope has a specific melting point.
Do all liquids have the same boiling and melting point?
No. The melting and boiling points of liquids vary considerably.
How do you identify solids at melting or boiling points?
Melting and boiling points are different for each compound or element.
Does carbon dioxide or water have higher boiling points?
i don't know but don't you have a textbook or something
Do nonmetals have higher melting points or lower boiling points?
lower melting points
Hydrocarbon boiling points increase the number of carbon or decrease?
the boiling points decrease on hydrocarbons as the length of the chain and the weight increases. the melting points increase with length and weight increase. Hope this helps.
What is the melting and boiling points of magnesium and chloride?
chloride isn't a thing on its own and the melting and boiling points of chlorine and magnesium will have no effect on the boiling and melting point og magnesium chloride.
How melting and boiling points are affected by intermolecular forces?
The stronger the intermolecular forces, the higher the melting point and boiling point. The weaker the intermolecular forces, the lower the melting and boiling points are.
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
What is melting points and the boiling points?
Melting point: the temperature at which a solid become a liquid. Boiling point: the temperature at which a liquid become a gas.
Why might you expect silicon dioxide and carbon dioxide to have similar melting and boling points?
You Ultimately would not expect them to have similar melting and boiling points.This is because Carbon Dioxide is a gas, it might have strong covalent bonds between their atoms but between their molecules they have weak intermolecular forces, therefore these forces are easily overcome during heating in lower temperaturesHowever when you look at Silicon Dioxide, it has a macromolecular structure. In other words the whole solid is actually just one molecule which its atoms are each covalently bonded to each other. Therefore since it has strong covalent bonds between them you would expect them to have extremely high melting and boiling points.Diamond is a macromolecular structure and it has a melting point of 3006 degrees centigrade. You could expect Silicon Dioxide's melting point (and boiling point) to be similarly high.
