Problem: A 4.691 g sample of MgCl2 is dissolved in enough water to give 750 mL of solution.  What is the magnesium ion concentration in this solution? A)  3.70 x 10–2 M              B)  1.05 x 10–2 M              C)  6.57 x 10–2 M               D)  4.93 x 10–2 M              E)  0.131 M

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A 4.691 g sample of MgCl2 is dissolved in enough water to give 750 mL of solution.  What is the magnesium ion concentration in this solution?

A)  3.70 x 10–2 M             

B)  1.05 x 10–2 M             

C)  6.57 x 10–2 M              

D)  4.93 x 10–2 M             

E)  0.131 M

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