You are given 18.6 g of mg. do you have a mole of magnesium.

No, 18.6 g of Mg contain 0.765 mole.

Given that,

amount of Mg we have = 18.6

By looking at periodic table:

Molar mass of magnesium = 24.305 u (g/mole)

It means one mole of magnesium contain 24.305 grams of magnesium

So,

24.305g = 1 mole

1g = 0.04114379757 mole

18.6g = 0.765 mole

Hence, 18.6 g of Mg contains 0.765 mole

             24.305 g of Mg contains a mole of Mg.

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.