Answer: 5 Liters
Explanation:
According to the dilution law,
where,
= concentration of first solution = 24%
= volume of first solution = x L
= concentration of second solution = 14%
= volume of second solution = (10-x) L
= concentration of final solution = 19%
= volume of final solution = 10 L
Putting i the values, we get:
Therefore, 5 Liters of the 24% acid solution are used to make 10 liters of the 19% acid solution.
Answer:
The [H⁺] for this soluton is 2*10⁻³ M
Explanation:
pH, short for Hydrogen Potential and pOH, or OH potential, are parameters used to measure the degree of acidity or alkalinity of substances.
The values that compose them vary from 0 to 14 and the pH value can be directly related to that of pOH by means of:
pH + pOH= 14
In this case, pOH=11.30, so
pH + 11.30= 14
Solving:
pH= 14 - 11.30
pH= 2.7
Mathematically the pH is the negative logarithm of the molar concentration of the hydrogen or proton ions (H⁺) or hydronium ions (H₃O):
´pH= - log [H⁺] = -log [H₃O]
Being pH=2.7:
2.7= - log [H⁺]
[H⁺]= 10⁻² ⁷
[H⁺]=1.995*10⁻³ M≅ 2*10⁻³ M
<u><em>The [H⁺] for this soluton is 2*10⁻³ M</em></u>
1s22s22p63s23p64s23d5 is the correct answer.
The sum is 34.688 m.
If m is a variable, then the m would be attached to 34.688.
