What is the concentration of magnesium ions in a 0.125 mol L-1 Mg(NO3) 2 solution?
A) 0.125 mol L-1
B) 0.0625 mol L-1
C) 0.375 mol L-1
D) 0.250 mol L-1
E) 0.160 mol L-1
Correct Answer:
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