Answer:
- <em>When a sample of matter changes state from a solid to a liquid, its entropy</em> <u>increases</u>.
Explanation:
The <em>entropy</em> is a thermodinamic variable that measures the disorder of radomness of a substance or system.
In the <em>solid </em>stated the particles (molecules, atoms or ions) are tightly packed, forming an organized structure. So, the particles barely can move, just vibrating around their fixed positions.
In the <em>liquid </em>state the particles are more free to move (that is why liquids flow and take the shape of the vessel in which they are contained).
Then, you can predict that <em>when a matter changes state from a solid to a liquid</em>, the parciles will gain motion leading to a higher disorder, which means that the entropy increases.
Answer:
atom 2 and 3 or d is should be your answer
Explanation:
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Answer:
Gravitational potential energy transforms into thermal energy.
Explanation:
Electrons should orbit indefintely because an electron cannot collide with a nucleas it has never happen as well as it is predicted to never happen
First convert to moles:
0.5113 g / 17 g/mol = 0.0301 mol
Now create a ratio based on the reaction provided to solve for the unknown:
4 NH3 / -905.4 kJ = 0.0301 mol NH3 / x kJ
x = -6.808 kJ