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.
Learn more about water treatment here:
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Heat is require for a high number of collisions.
Answer:
6,41 min
Explanation:
For the reaction:
A → products
kinetics first-order reaction law is:
ln[A] = ln[A]₀ -kt
Where [A] is concentration of reactant, [A]₀ is initital concentration of reactant, k is rate constant and t is time.
If the concentration of A is 6,25% you can assume:
[A] = 6,25; [A]₀= 100. Replacing:
ln(6,25) = ln(100) -7,20×10⁻³s⁻¹t
-2,7726 = -7,20×10⁻³s⁻¹t
385s = t
In minutes:
385s×
= <em>6,41 min</em>
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I hope it helps!
A common dry-cell battery is the zinc-carbon battery, which uses a cell that is sometimes called the Leclanché cell. The cell is made up of an outer zinc container, which acts as the anode.
the correct answer would be false. i got this correct on my test.
