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One coulomb is about __________ electrons.


2.68 x 1028
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In an electrolytic cell, the ___________ energy is generated at the expense of __________energy.

Coating of iron with zinc to prevent rusting is called  _______.

In a galvanic cell ________ energy is generated at the expense of _______ energy.

A solution of sodium in liquid ammonia at -33°C conducts electricity. On cooling, the conductivity of this solution is_________.

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