What can be said about a substance with a triple point above 1 atm?
Such a substance sublimes at one atmosphere pressure.
In a standard phase diagram for a single substance, the triple point is a single combination where solid, liquid, and vapor come together in a three-phase equilibrium. The liquid phase is found only above the pressure of the triple point. Below that pressure the solid and gas are in equilibrium without the liquid, so the solid sublimes instead of melting. Carbon dioxide, whose phase diagram is shown below, is one example. Image from http:/davidjohnnewhart.com/Chemistry.
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A substance with a triple point above 1 atm typically means that it has a higher vapor pressure at standard atmospheric pressure (1 atm). This suggests that the substance is more volatile or easier to vaporize compared to substances with triple points below 1 atm.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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