One dietary supplement capsule weighing 4.90 was ground into a fine powder. Two portions of the solid, both weighing 0.200 g, were dissolved in dilute acid and transferred to 50-mL volumetric flask. To one of these, 5.00 mL of 40.0 ppm manganese ion was added, then both flasks were diluted to the mark with distilled water. When aspirated into the flame of an atomic absorption spectrometer set at a manganese absorption wavelength, the absorbances of the unknown and unknown plus standard were 0.300 and 0.650, respectively. Calculate the amount (g) of Mn in one capsule.
One dietary supplement capsule weighing 4.90 was ground into a fine powder. Two portions of the solid, both weighing 0.200 g, were dissolved in dilute acid and transferred to 50-mL volumetric flask. To one of these, 5.00 mL of 40.0 ppm manganese ion was added, then both flasks were diluted to the mark with distilled water. When aspirated into the flame of an atomic absorption spectrometer set at a manganese absorption wavelength, the absorbances of the unknown and unknown plus standard were 0.300 and 0.650, respectively. Calculate the amount (g) of Mn in one capsule.
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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One dietary supplement capsule weighing 4.90 was ground into a fine powder. Two portions of the solid, both weighing 0.200 g, were dissolved in dilute acid and transferred to 50-mL volumetric flask. To one of these, 5.00 mL of 40.0 ppm manganese ion was added, then both flasks were diluted to the mark with distilled water. When aspirated into the flame of an atomic absorption spectrometer set at a manganese absorption wavelength, the absorbances of the unknown and unknown plus standard were 0.300 and 0.650, respectively. Calculate the amount (g) of Mn in one capsule.
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