Answer:
432cm³
Explanation:
Given parameters:
Length = 12cm
Height = 6cm
Width = 6cm
Unknown:
V = ?
Solution:
We have been given that;
V = L x W x H
So;
V = 12cm x 6cm x 6cm = 432cm³
The pH of the solution is a measure of the acidity of such solution. Acidity is the level of how much acid is present in a mixture and is associated with the concentration of hydronium ions. For pH, it is equal to the negative logarithm of the hydronium ion concentration. We use this to calculate for what was asked.
pH = - log [H+]
2.32 = - log [H+]
[H+] = 4.79x10^-3 M
Answer:
C. hydrocyanic acid
Explanation:
The mixture of a weak acid (As hydrocyanic acid, HCN), with its conjugate base (Na⁺CN⁻) produce a buffer effect in the solution due the equilibrium:
HCN ⇄ CN⁻ + H⁺
Now, when NaOH (A base) is added to the mixture, the reaction with <em>HCN </em>is:
NaOH + HCN → Na⁺CN⁻ + H₂O
As the OH⁻ of NaOH are not affecting directly the H⁺ concentration, <em>the pH does not increase dratically.</em>
<em />
Right answer is:
<em>C. hydrocyanic acid
</em>
Electronegativity! It is a big and very important word lol