Questions about example sentences with, and the definition and usage of "Electrolyte"

A: An electrolyte is a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons .

A: Its pretty close. I assume that 20 is a critical number for obtaining statistically significant results: " Urinary electrolytes could only be obtained in full from fewer than 20 patients of the cases group. We were thus unable to analyze the concentrations of urinary electrolytes fully. "