Which selection is an example of an electrolyte a. potassium iodide in water
b. sucrose in water
c. pentane in octane
d. methanol in water

i believe its A, potassium iodide in water

Explanation:

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.