Initial solution was prepared by dissolving 5 mmol of Sr(NO3)2 and
10 mmol of Fe(NO3)3·9H2O in 15 mL deionized water and the mixture
was subjected to vigorous magnetic stirring to obtain a clear solution. In this procedure. How could I take the weights? 5millimolar means 1.05 gm in 1000ml. Then what is this 15ml? Please help me to find the weights according to the above procedure.