Which one of the following solutions contains the greatest number of moles of chloride ions? A. 25 mL of 2.0 M NaCl
B. 50 mL of 1.0 M CaCl2
C. 10 mL of 2.5 M FeCl3
D. All contain the same number of chloride ions
E. The solution mass is needed to determine the number of moles

ok

Explanation:

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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