Chemical Engineering Thermodynamics
If we increase the pressure on a substance (which is at its triple point), then the triple point

Remains unchanged
Decreases
May increase or decrease ; depends on the substance
Increases

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Chemical Engineering Thermodynamics
The adiabatic throttling process of a perfect gas is one of constant enthalpy

Which can be performed in a pipe with a constriction
In which there is a temperature drop
Which is exemplified by a non-steady flow expansion
In which there is an increase in temperature

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