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When aqueous solutions of magnesium chloride and sodium hydroxide are mixed, magnesium hydroxide precipitates out. Suppose that 100.0 mL of a 0.120 M solution of magnesium chloride is mixed with 100.0 mL of .210M sodium hydroxide. Assume that the volumes are additive (which is only approx correct) and calculate the molarity of the chloride ion in the final solution.
A) .0600 M
B) .105 M
C) .120 M
D) .240 M
E) None of these
A mixture of FeO and Fe2O3 with a mass of 10.0 g is converted to 7.43 g Fe of pure Fe metal. What are the amounts in grams of FeO and Fe2O3 in the original sample
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calculate the mole fraction of soluteand solvent present in the solution.
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