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    Exam 21: Main Group Elements I: Groups 1, 2, 13, and 14
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    In Seawater, Mg<sup>2+</sup> Is About 1350 Mg Mg<sup>2+</sup>/L
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In Seawater, Mg2+ Is About 1350 Mg Mg2+/L

Question 53

Question 53

Multiple Choice

In seawater, Mg2+ is about 1350 mg Mg2+/L. How many grams of magnesium are in a pool that is 25 ft by 12 ft by 6 ft? (1 ft = 12 inches and 1 inch = 2.54 cm)


A) 4.78 × 102 g
B) 74.1 g
C) 6.88 × 104 g
D) 6.88 × 107 g
E) 1.64 × 103 g

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