$Al$ has double the conductivity compared to which metal?

The resistance of a conductivity cell filled with $0.1 \ M$ $KCl$ solution is $100 \ \Omega$ and the conductivity is $1.70 \times 10^{-4} \ S \ cm^{-1}$. What is the cell constant of the cell (in $cm^{-1}$)?

The resistance of a $0.1 \, N$ solution of a salt is $2.5 \times 10^{3} \, \Omega$. If the cell constant is $1.15 \, cm^{-1}$,what will be the equivalent conductance of the solution in $\Omega^{-1} \, cm^{2} \, eq^{-1}$ (in $.6$)?

Explain Kohlrausch law of independent migration of ions.

Calculate the concentration of silver nitrate solution if molar conductivity and conductivity of silver nitrate at $25 \text{ }^\circ\text{C}$ are respectively $120 \text{ ohm}^{-1} \text{cm}^2 \text{mol}^{-1}$ and $0.0024 \text{ ohm}^{-1} \text{cm}^{-1}$. (in $\text{ M}$)

The conductivity of $0.20 \ M \ KCl$ solution at $300 \ K$ is $0.0248 \ \Omega^{-1} \ cm^{-1}$. What is its molar conductivity?