Please explain all steps

For an amphibians skeletal muscle, typical values for the intracellular and extracellular concentrations of the major ion species are given in the following table. Species (ion) Extracellular concentration (mmol/L) Intracellular concentration (mmol/L) Na 145 12 K* 4 155 CI 120 4 Assuming room temperature (20 C) and typical values of permeability coefficient for amphibians skeletal muscle: PNin = 2 x 10 cm/s, Pk - 2 x 10 cm/s, and Pa - 4x 10-8 cm/s, a) Calculate the equilibrium resting potential for the cell membrane. b) Calculate the diffusion potential for Na. For an amphibians skeletal muscle, typical values for the intracellular and extracellular concentrations of the major ion species are given in the following table. Species (ion) Extracellular concentration (mmol/L) Intracellular concentration (mmol/L) Na 145 12 K* 4 155 CI 120 4 Assuming room temperature (20 C) and typical values of permeability coefficient for amphibians skeletal muscle: PNin = 2 x 10 cm/s, Pk - 2 x 10 cm/s, and Pa - 4x 10-8 cm/s, a) Calculate the equilibrium resting potential for the cell membrane. b) Calculate the diffusion potential for Na