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Chemistry, 11.12.2019 07:31 riyah03

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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