Asolution has a ph of 4.20. using the relationship between ph and poh, what is the concentration of oh? ? a. 9.9 × 10-1 m b. 6.2 × 10-1 m c. 6.3 × 10-5 m d. 6.7 × 10-6 m e. 1.6 × 10-10m

The correct answer is option E.

Explanation:

The pH of the solution is defined as negative logarithm of hydrogen ions  concentration in a solution. Mathematically written as:

The pOH of the solution is defined as negative logarithm of hydroxide ions  concentration in a solution. Mathematically written as:

The sum of ph and pOH is equal to 14.

pH + pOH = 14

A solution has a pH of 4.20.

Hence, the correct answer is option E.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

thats a little if u want the answer just look it up on google thats what i do haha : )