According to the U.S. Geological Survey, most of that three percent is inaccessible. Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps.
Answer:
Explanation:
Hello,
In this case, for the given decomposition of phosphorous pentachloride:
As the equilibrium constant is and the initial concentration of phosphorous pentachloride is:
Hence, by writing the law of mass action equation:
We must introduce the change occurring due to the reaction extent and the concentrations at equilibrium (ICE table methodology):
Thus, solving for we obtain:
In such a way, the equilibrium concentration of phosphorous pentachloride results:
Finally, the percent decomposition is computed by:
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Answer:
The answer to your question is A and B
Explanation:
Chemical reactions can be classified by the energy that they need to proceed or the energy they release.
Endothermic reactions are reactions that require energy to proceed most of the time this energy is in the form of heat.
Exothermic reactions are reactions that release energy to proceed, this energy could be in the form of heat or light.
Answer: B. 0.6125 m
For spherical concave mirror:
Height of the object,
Height of the image,
Object distance, u=-0.7 m
we need to find the distance of the image, v.
These are related by the following formula:
Insert the values:
Hence, option B is the correct.
It is endothermic reaction ΔH>0 (sign is +).
Because it is spontaneous reaction ΔG<span><0 (Gibbs free energy)
</span>ΔG=ΔH-TΔS, so must be TΔS>ΔH and ΔS<span>>0 (sign +).</span>