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3 years ago

How are changes between phases consistent with the law of conservation of matter

2 answers:

8 0

<span>I'm assuming its cause the total mass is the same, changes between phases are physical... solid ice and liquid water have the same mass</span>

ikadub [295]3 years ago

5 0

Answer:

When a substance change its phase, neither destruction nor creation of matter is carried out.

Explanation:

Hello,

In this case, a phase change or phase transition is a physical process based on a modification of a substance's molecular arrangement due to the heat adding or removal, in such a way, if for instance a liquid is boiled, heat is added so matter is not destroyed but changed in its molecular arrangement from more organized and quiet, to dispersed and choppy. A similar phenomena also occurs to other phase transition, therefore, one concludes that when a substance change its phase, neither destruction nor creation of matter is carried out so the law of conservation of matter is respected.

Best regards.

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Answer:

Joule-Thomson coefficient for an ideal gas:

$\mu_{J.T} = 0$

Explanation:

Joule-Thomson coefficient can be defined as change of temperature with respect to pressure at constant enthalpy.

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$dH= \left [\frac{\partial H}{\partial T}\right ]_P dT + \left [\frac{\partial H}{\partial P}\right ]_T dT$

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$\left [\frac{\partial H}{\partial P}\right ]_T = -C_p\times \left [\frac{\partial T}{\partial P}\right ]_H$

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$\mu_{J.T} = \left [\frac{\partial T}{\partial P}\right ]_H$

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$\left [\frac{\partial H}{\partial P}\right ]_T =-\mu_{J.T}\times C_p$

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Answer:

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Answer:

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