Importance<span> of </span>Valence Electrons<span>. When two atoms approach each other and react with each other, it is their outer shells that come into contact first, and it is therefore the </span>electrons<span> in their outer shells that are normally involved in any chemical reaction.</span>
The answer is pH = 4.6. Methyl orange would turn yellow if the pH is above 4 and methyl red turns red when the pH level is below 5. So, it should be PH = 4.6<span>
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1s^2 2s^2 <span>is the electron configuration for an electrically neutral atom of beryllium(Be).</span>
Answer:
bacteria
Explanation:
the bacteria is what they eat and drink so they addapt to it
Taking into account the definition of dilution, the new concentration of the solution is 0.2567 M.
First of all, you have to know that dilution is the reduction in concentration of a chemical in a solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volumeof the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
-
Ci: initial concentration
- Vi: initial volume
- Cf: final concentration
- Vf: final volume
In this case, you know:
- Ci= 0.385 M
- Vi= 600 mL= 0.600 L (being 1000 mL= 1 L)
- Cf= ?
- Vf= 900 mL= 0.900 L
Replacing in the definition of dilution:
0.385 M× 0.600 L= Cf× 0.900 L
Solving:
Cf= (0.385 M× 0.600 L)÷ 0.900 L
Cf= 0.2567 M
In summary, the new concentration of the solution is 0.2567 M.
Learn more about dilution: