How is Nernst equation useful in calculating the potential of a cell?

Membrane potential of a cell forms

At 25^@C , Nernst equation is

Write the Nernst equation for a single electrode potential

In hypertonic solution the water potential of cell

How Nernst equation can be applied in the calculation of equilibrium constant of any cell reaction ?

Define heat of formation.How is it useful in the calculation of the heat of a reaction ?

What is Avogadro's number and what is its significance ? How is the mole concept useful in calculations based on chemical equations ?

Write the Nernst equation for the cell reaction in the Daniel cell. How will the E_("cell") be affected when concentration of Zn^(+) ions is increased?

For a cell reaction : M^(n+)(aq)+"ne"^(-) to M(s) , the Nernst equation for electrode potential at any concertation measured with respect to standard hydrogen electrode is represented as

What is Nernst equation ? Explain the significance of various terms used.