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11-12-2019
Chemistry

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The recommended daily requirement of calcium is1,000 mg. Tap water in a Midwestern city contains approximately 150 mgCa/L. A person living in the city who drinks two liters of water in oneday would receive ________ percent of his/her RDA of calcium.

A. 3
B. 7.5
C. 15
D. 30

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Zexatakeshi Zexatakeshi

11-12-2019

The answer is D. 30 percent

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