Answered: (d) The RDA for the trace element…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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ANSWER (D)

(a) The recommended daily allowance (RDA) of the trace metal magnesium is 410
mg/day for males. Express this quantity in g/day. (b) For adults, the RDA of the
amino acid lysine is 12 mg per kg of body weight. How many grams per day should
a 75 kg adult receive? (c) A typical multivitamin tablet can contain 2.0 mg of vitamin
B2 (riboflavin), and the RDA is 0.0030 g/day. How many such tablets should a person
take each day to get the proper amount of this vitamin, assuming that he gets none
from any other sources? (d) The RDA for the trace element selenium is 0.000070
g/day. Express this dose in mg/day.

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