What is pH ? How is it calculated ?

What is mole fraction? How is it calculated?

What is dipolemoment? How is it calculated?

What is a pH scale ?

How is magnetic moment calculated ?

What is PH? What is its range? What are the negative impact if the pH of soil is too low or too high?

What is the lower limit of a class ? What is the upper limit of a class ? How do you calculate the boundaries of classes?

What equation is used calculating the pH of an acid buffer?

In pH sclae what is p and what is its meaning?