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spin [16.1K]
3 years ago
10

The change of phase from a solid to a gas is called _____. evaporation melting sublimation vaporization

Physics
2 answers:
ziro4ka [17]3 years ago
4 0

Solid to gas stage changes are known as "sublimation." In many cases, solids transform into gases simply after an intermediate liquid state. It is an endothermic procedure (happens with the absorption of heat from the environment).  

Some example:

Freeze drying - Water can be sublimated in sustenance items by utilizing a vacuum.  

"Dry ice" or, in other words carbon dioxide and as the name proposes it experiences stage change from solid state to liquid state straightforwardly without wetting or going into liquid state.


monitta3 years ago
4 0

The correct answer to the question is sublimation i.e the change of phase from solid to gas is called sublimation.

EXPLANATION:

Before answering the question, first we have to understand various changes of states of matter.

There are various state changes or phase changes in nature.

Melting: Melting is the heat phenomenon in which  substance in solid  phase is converted into liquid at its melting point. For instance, ice converted into water.

Sublimation: Sublimation is the type of phase change in which solid substance is directly converted into gas without melting. For instance, the vaporization of camphor.

Vaporization: Vaporization is the type of phase change of matter in which a liquid substance is converted into gas at its boiling point. For instance, boiling of water.

As per our question, the change is occurring from solid to gas.

Hence, the phase change will be sublimation.

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In an experiment, a large number of electrons are fired at a sample of neutral hydrogen atoms and observations are made of how t
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N = 1036 times

Explanation:

The radial probability density of the hydrogen ground state is given by:

p(r) = \frac{4r^{2} }{a_{0} ^{3} } e^{\frac{-2r}{a_{0} } }

p(\frac{a_{0} }{2} ) = \frac{4(\frac{a_{0} }{2} )^{2} }{a_{0} ^{3} } e^{\frac{-2(\frac{a_{0} }{2} )}{a_{0} } }

p(2a_{0} ) = \frac{4(2a_{0}) ^{2} }{a_{0} ^{3} } e^{\frac{-4a_{0} }{a_{0} } }

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N = 1300\frac{(2a_{0}) ^{2}e^{\frac{-4a_{0} }{a_{0} } }  }{(\frac{a_{0} }{2} )^{2} e^{\frac{-a_{0} }{a_{0} } }}

N = 1300(16) e^{-3}

N = 1035.57

N = 1036 times

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3 years ago
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