Calculate the conductivity of $0.02 \ M$ electrolyte solution if its molar conductivity is $407.2 \ \Omega^{-1} \ cm^2 \ mol^{-1}$.
- A$8.144 \times 10^{-3} \ \Omega^{-1} \ cm^{-1}$
- B$4.072 \times 10^{-3} \ \Omega^{-1} \ cm^{-1}$
- C$7.15 \times 10^{-3} \ \Omega^{-1} \ cm^{-1}$
- D$6.055 \times 10^{-3} \ \Omega^{-1} \ cm^{-1}$
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