How many moles of ions are released when these samples are dissolved in water?

Question

a. 0.37 mol of NH4Cl

b. 3.55 * 10^18 formula units of
Ba(OH)2 * 8H2O

I need to know what steps to take to get to the answer. Thanks!

Answer 1

0.37 mole NH4Cl dissolved in water will be 0.37 mole NH4Cl. Each mole NH4Cl contains two ions; i.e., NH4^+ and Cl^-. Therefore, 0.37 x 2 = 0.74 mole ions in solution.

Answer 2

thanks