A::A represents
1. two lone pairs of electrons.
2. one lone pair of clectrons.
3. a double bond.
4. quadruple bond.
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Ответ:
1
Explanation:
because its to long just why its useless
Ответ:
See the answer below
Explanation:
The information than can be inferred from knowing the pH value of a chemical solution is the hydrogen or hydroxyl ion concentration of the solution.
The pH of a solution is the degree of acidity or alkalinity of the solution. Mathematically, the pH of a solution is expressed as:
pH =![-log_{10}[H^+]](/tpl/images/0724/4209/d6a95.png)
where ![[H^+]](/tpl/images/0724/4209/07acb.png)
= hydrogen ion concentration.
Also,
pH = 14 - pOH, where pOH =![-log_{10}[OH^-]](/tpl/images/0724/4209/3ceaa.png)
The more the![[H^+]](/tpl/images/0724/4209/07acb.png)
of a solution, the lower the pH, and the more the ![[OH^-]](/tpl/images/0724/4209/b2910.png)
of a solution the higher the pH. The pH value ranges from 0 - 14 with 7 being a neutral pH.