How many grams are in 10.0 mEq of Ca²⁺? A)0.201 g B)40.1 g C)20.1 g D)0.802 g E)0.401 g

Name: How many grams are in 10.0 mEq of Ca 2+ ? A)0.201 g B)40.1 g C)20.1 g D)0.802 g E)0.401 g
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Quizplus · Accepted Answer

Calcium has a valence of 2, so 1 mEq of Ca²⁺ is equivalent to 0.5 mmol. The molar mass of calcium is approximately 40.08 g/mol. Therefore, 10.0 mEq of Ca²⁺ is 5 mmol, which is 0.201 g (5 mmol * 40.08 g/mol * 0.001).

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