The body’s ph is tightly regulated because specific enzymes function best within a narrow ph range. what is the approximate ph of a 1.2 × 10–5 m aqueous solution of naoh?

9.08

Explanation:

pOH is defined as the negative logarithm of the concentration of hydroxide ions.

Thus,  

pOH = - log [OH⁻]

Given that:- [OH⁻]  = 1.2 × 10⁻⁵ M

Putting in the above equation as:-

pOH = - log 1.2 × 10⁻⁵ = 4.92

Also, pH + pOH = 14  

So, pH = 14 - 4.92 = 9.08

pH scale generally runs from 1 to 14 where pH = 7 represents neutral medium, pH < 7 represents acidic medium and pH > 7 represents basic medium.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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