1.265 g of hydrated magnesium nitrate, Mg(NO3) 2.6H2O were dissolved in 100.0 cm3 of water. 10.0 cm3 of this solution were made up with water to 250.0 cm3. Calculate the concentration of Mg2+ ions in the resulting solution.
A) 0.01973 mol dm-3
B) 0.03411 mol dm-3
C) 0.04933 mol dm-3
D) 0.08528 mol dm-3
Correct Answer:
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