Question

In the laboratory a student combines 25.9 mL of a 0.223 M magnesium bromide solution with 23.3 mL of a 0.615 M magnesium acetate solution.

What is the final concentration of magnesium cation ?

..... M

Answer 1

mols Mg from MgBr2 = M x L = ?
mols Mg from Mg(Ac)2 = M x L
(Mg) in final solution = total mols Mg/total L solution.