River samples may evidence problems with the water treatment plant because it may contain an excessive amount of certain substances which are filtered during this procedure.
<h3>What is a water treatment plant?</h3>
A water treatment plant is a place where wastewater from a city is processed and purified in order to obtain potable water.
Water treatment procedure generally involves the collection, chemical substance addition, filtration, and disinfection.
Any type of problem in these steps can be evidenced by taking a sample of the water after treatment.
In conclusion, river samples evidence problems due to an excessive amount of certain substances which are filtered during this procedure.
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Answer:
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Explanation:
Answer:
The catalyzed reaction will take time of 
.
Explanation:
According to the Arrhenius equation,
The expression used with catalyst and without catalyst is,
where,
= rate of reaction with catalyst
= rate of reaction without catalyst
= activation energy with catalyst = 59.0 kJ/mol = 59000 J/mol
= activation energy without catalyst = 184 kJ/mol = 184000 J/mol
R = gas constant
T = temperature = 
Now put all the given values in this formula, we get:
The reaction enhances by 
when catalyst is present.
Time taken by reaction without catalyzed = 3900 years
Time taken by reaction with catalyzed = x
The catalyzed reaction will take time of .
Explanation:
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