<h3>The first law of thermodynamics :</h3>
According to this law, some heat given to the system is used to change the internal energy while the rest is used in doing work by the system.
This relationship is mathematically represented as follows:
ΔQ = ΔU + W
where ΔQ is the heat given or lost, ΔU is the change in internal energy and W is the work done.
<h3>The second law of thermodynamics :</h3>
If a room is not tidied or cleaned, it invariably becomes more messy and disorderly with time.
When the room is cleaned its entropy decreases but the effort to clean it has resulted in an increase in entropy outside the room that exceeds the entropy lost.
<h3>
The Third law of thermodynamics :</h3>
The entropy of a pure crystalline substance (perfect order) at absolute zero temperature is zero. This statement holds true if the perfect crystal has only one state with minimum energy.
<u>Answer:</u> The expression of 
is written below.
<u>Explanation:</u>
We are given a chemical compound which is trimethylamine that acts as a weak base when dissolved in water.
It accepts a proton from the water to form trimethylammonium ion and hydroxide ion.
The chemical equation for the reaction of trimethylamine in water follows:
The expression of for above equation follows:
![K_b=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N]}](https://tex.z-dn.net/?f=K_b%3D%5Cfrac%7B%5B%28CH_3%29_3NH%5E%2B%5D%5BOH%5E-%5D%7D%7B%5B%28CH_3%29_3N%5D%7D)
Hence, the expression of is written above.
Answer:
During photosynthesis, plants absorb carbon dioxide and sunlight to create fuel, glucose and other sugars for building plant structures. This process forms the foundation of the fast carbon cycle.In all four processes, the carbon dioxide released in the reaction usually ends up in the atmosphere.
B.Several chemical changes occurred. I conclude that a chemical reaction took place
Explanation:
From the observation, Jason can conclude that several chemical changes occurred and a chemical reaction has taken place. In a chemical change, often times, new products are usually formed.
- A chemical change is one in which new kind of matter is formed.
- Chemical changes are products of chemical reactions.
- The rearrangement of atoms in reacting species and the formation of bonds leads to chemical reactions.
- Chemical changes are irreversible, no change in mass(mass is conserved) and they require considerable amount of energy.
Learn more:
chemical change brainly.com/question/9388643
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