The electrochemical equivalent of a meta...

The electrochemical equivalent of a metal is `3.35109^(-7)` kg per Coulomb. The mass of the metal liberated at the cathode when a 3A current is passed for 2 seconds will be

`19.8 xx 10^(-7)kg`

`9.9 xx 10^(-7)kg`

`6.6 xx 10^(-7)kg`

`1.1 xx 10^(-7)kg`

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