Answer:
Explanation:
Hello,
In this case, since calcium hydroxide a strong base, its dissociation will completely result in both calcium and hydroxyl ions:
Thus, the concentration of hydroxyl ions equals that of the calcium hydroxide, with which we could compute the pOH as shown below:
![pOH=-log([OH^-]}=-log(0.0012)\\\\pOH=2.92](https://tex.z-dn.net/?f=pOH%3D-log%28%5BOH%5E-%5D%7D%3D-log%280.0012%29%5C%5C%5C%5CpOH%3D2.92)
Now, the pH and the pOH are related by:
Hence, the pH finally results:
Best regards.
The protons in an nucleus of an atom will not change unless a nuclear reaction takes place. The number of protons is equal to the atomic number of the element. For a neutral atom, the number of electrons and protons are equal. When they are unequal, then the atom occurs as an ion. It will has a net charge with it. The ion O²⁻ has a net charge of negative positive 2 because it has 2 more electrons than its protons. Since neutral oxygen has 8 protons, then O²⁻ ion has 8 protons and 10 electrons.
A: there is no unit. b: it doesn't present the temperature and pressure
Is this multiple choice? Is there any educational problem that really needs to be solved?
If you ask me I think a helicopter would be fastest, just sayin.
A Lewis structure is a visual representation of the bonds between atoms and it shows the lone pairs of electrons in molecules. This structure is also referred as Lewis dot diagram. Resonance structure are multiple Lewis structure that describe a single molecule.<span>
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