An equivalent is:
a) an equivalent is the amount of ion that has a 1+ charge.
b) 1 mole of an ionic compound.
c) 1 mole of any ion. the amount of ion that carries 1 mole of electrical charge.
d) the amount of ion that has a 1- charge.

The amount of ion that carries 1 mole of electrical charge

Explanation:

One equivalent: In reaction stoichiometry, the amount of one substance that reacts with one mole of another substance. This will often (but not always) be a 1:1 mole ratio.

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

answer seismograph;