What is the pOH concentration of a .0768 M NaOH solution?

1.2

Explanation:

pOH is the negative logarithm of hydroxide ion concentration in the solution.

Thus, pOH is expressed as

pH = - log(OH-)

NaOH(aq) ---> Na(aq) + OH-(aq)

The alkali ionizes to give hydroxide ion OH- as the only negative ion. Hence, the concentration of OH- is also 0.0768

So, pOH = - log(0 .0768)

pH = -(-1.15)

pH = 1.15 (since the two minus signs will cancel out)

Round the pOH value to the nearest tenth as 1.2

Thus, the pOH concentration of 0 .0768 NaOH solution is 1.2 (highly concentrated)

plasma - state of matter made up of electrically charged particles

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.