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.

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


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

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

galvanisation
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