Question

How many moles of magnesium are in 1.25 x 10^23 ions of magnesium?

Answer 1

Step-by-step explanation:

1 mol of Mg = 6.02 * 10^23 ions of magnesium

x = 1.25 * 10^23 ions of magnesium

1/x = 6.02 * 10^23/1.25 * 10^23 Cross multiply

x*6.02 * 10^23 = 1 * 1.23 * 10^23 Divide by 6.02*10^23

x = 1.25 * 10^23 / 6.02*10^23

x = 0.208 mols