By crushing a solid into a powder you increase the reaction rate (the chemical reaction rate). By crushing into a powder, you are increasing the surface area, increasing the exposure to the chemical reaction. The smaller the particles, the faster the chemical reaction that will take place. Think about an ice cube put in a pot of boiling water. The whole ice cube will take longer to melt than if you first crushed that ice cube into small pieces. Small pieces of ice put into boiling water would melt very quickly.
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the mass of the shells will remain the same because you can not change mass even if you were to leave this planet and go to the moon your weight would change but your mass remains the same
Because it helps enriches the soil, just like when you make home made compost you add egg shells and old veggies and stuff all the vitamins enriches the compost.
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Of what?
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Answer:
Explanation:
Hello,
In this case, for the given chemical reaction at equilibrium:
The initial concentration of sulfur trioxide is:
![[SO_3]_0=\frac{0.660mol}{4.00L}=0.165M](https://tex.z-dn.net/?f=%5BSO_3%5D_0%3D%5Cfrac%7B0.660mol%7D%7B4.00L%7D%3D0.165M)
Hence, the law of mass action to compute Kc results:
![Kc=\frac{[SO_2]^2[O_2]}{[SO_3]^2}](https://tex.z-dn.net/?f=Kc%3D%5Cfrac%7B%5BSO_2%5D%5E2%5BO_2%5D%7D%7B%5BSO_3%5D%5E2%7D)
In such a way, in terms of the change 
due to the reaction extent, by using the ICE method, it is modified as:
In that case, as at equilibrium 0.11 moles of oxygen are present, equals:
![x=[O_2]=\frac{0.110mol}{4.00L}=0.0275M](https://tex.z-dn.net/?f=x%3D%5BO_2%5D%3D%5Cfrac%7B0.110mol%7D%7B4.00L%7D%3D0.0275M)
Therefore, the equilibrium constant finally turns out:
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